The Demand Letter: What a Cease-and-Desist to a Spam Caller Should Contain

By MercPrivacy · Published 2026-09-06 · Updated 2026-09-07

A cease-and-desist to a spam caller should demand preservation of records, list each call, state the statutory basis plainly, ask for the consent record and set a deadline. Any release of claims goes through a licensed attorney.

A cease-and-desist letter to a spam caller should demand that the company preserve its call records and consent data, list each call or text by date, time and number, state the statutory basis plainly, ask for the consent record the company claims to hold, and set a deadline for a written response. Under the TCPA, an autodialed or prerecorded call to a cell phone without the required consent carries $500 per violation, up to $1,500 when willful or knowing.

This article covers what the letter is for and what it is not, each element in order, the statutory basis stated at the level of generality that keeps a letter accurate, what not to write, who the letter should actually go to, and why any settlement paperwork that releases your claims must go through a licensed attorney. Texas adds a private action of its own under section 305.053 of the Business and Commerce Code, at the greater of $500 per violation or actual damages, which a court may raise to the greater of $1,500 per violation or three times actual damages for a knowing or intentional violation; verify the current statutory text before relying on it. The letter is less a threat than a records request with a deadline.

“The letters that get a response are boring. Dates, numbers, a records request and a deadline. The letters that get ignored open with a threat and close with a figure the writer made up.”

What a Demand Letter Is For, and What It Is Not

Federal law does not require a warning letter before a TCPA claim. Some state statutes do impose a precondition; Florida, for example, requires a stop request and a fifteen-day cure window before a text-message claim exists, so check your own state's current text before assuming the letter is optional. Even where it is optional, it earns its place for four reasons.

First, preservation: once a company is on written notice, it has a duty to keep the records that matter, and a company that destroys them afterward has a much bigger problem than the calls. Second, identification: the response often names the dialing vendor, the lead source and the “consent” the company believes it holds, which are the facts that decide the case. Third, revocation: a dated, written instruction to stop, sent to the company and its agents, is the cleanest proof that later calls were made after you said no. Fourth, a channel: many companies answer with an offer, and that is the point at which an attorney takes over.

What the letter is not: a lawsuit, a regulatory complaint, or a place to vent. It is the first formal document in a file that a judge, an arbitrator or opposing counsel may one day read, and it should be written as if they will.

The Elements, in Order

Who you are and which number was called

Your name, the number, whether it is a cellular number, the date it was registered on the national do-not-call registry and the Texas list if applicable, and a plain statement that you have no business relationship with the company, or that you revoked any consent on a stated date.

The enumerated contacts

A table or list: date, time, calling number, whether the call was prerecorded, live or a text, what was said, and whether you told them to stop. A representative sample with a total count is acceptable, but every listed item must be exactly right. Attach screenshots and carrier records as exhibits. This is where the discipline described in the evidence file pays off.

The statutory basis, stated generally

Name the provisions that fit the facts. The TCPA's restriction on autodialed and prerecorded calls to cell phones without prior express consent covers most robocalls and texts. The do-not-call provision applies when more than one call arrives within a twelve-month period by or on behalf of the same entity, and its private action reaches the seller the calls were made for. State the figures the statutes provide, five hundred dollars per violation and up to fifteen hundred for a willful or knowing violation, and Texas's parallel action under chapter 305, which the 2025 amendments extended to text messages and tied to Deceptive Trade Practices Act remedies effective September 1, 2025. How the figures actually work is covered in statutory damages explained.

The preservation demand

List the categories: dialer and campaign logs, call recordings, the records of any claimed consent including the form, URL, IP address and timestamp, do-not-call scrub records, and the agreements with any vendor, lead seller or agent involved. Ask that they be preserved from the date of the first call through resolution.

The consent-record demand

Ask the company to produce the consent it relies on: where, when, in what form, with what disclosure, for which number. Companies that hold a real record produce it quickly; companies that hold a lead-generator form with a mismatched name and a broken link tend to go quiet. What a genuine record looks like, and what a manufactured one looks like, is the subject of the consent they claim you gave.

The stop instruction and the deadline

State that all calls, texts and voicemails to the number must stop, that the number is to be placed on the company's internal do-not-call list, and that the instruction covers affiliates, vendors and agents. Give a reasonable deadline for a written response, commonly a few weeks, and say that the response must be in writing, not by phone.

What Not to Write

Do not threaten criminal prosecution, and do not offer to withhold a regulatory complaint in exchange for payment; both turn a legitimate demand into something that can be used against you. Do not inflate the count, label a live call “autodialed” when you do not know how it was placed, or claim figures the statute does not provide. Do not speculate against yourself: a line such as “I may have filled out a form once” hands the company a consent argument it did not have. Do not insult anyone, and do not write anything you would not want read aloud in a courtroom.

Who to Send It To, and How

Address the letter to the company the calls were made for, not merely the dialing vendor, because the do-not-call provision reaches calls made on the seller's behalf and the seller is the party with something to lose. Send it to the registered agent listed with the Secretary of State and to the address in the company's privacy policy, by certified mail with return receipt and by email, and keep copies of everything, including the receipt. Never send a demand to the owner of a spoofed number; identify the company first, and if the file does not yet name one, the warm transfer to a live representative is usually the quickest way to learn it.

If you are not sure which company the letter should be addressed to, that is the most common gap in a file, and the free 30-minute privacy assessment is where a specialist looks at what you have and says who it points to.

After the Letter: The Responses You Can Expect

Silence is common and is itself informative. A form denial usually names the department that handles disputes, which is useful. A note saying you have been removed is an admission that the company had your number and was calling it; keep it. A consent claim with a lead form attached is the response to examine most carefully, since the form's details decide whether the consent is real. An offer to pay goes straight to an attorney. More calls after the letter are the most valuable evidence you will ever collect, because each one arrives after written notice.

From there the paths are the ones described in the small claims option, an attorney-handled claim, or, if a class action already exists against the company, a decision about whether to join it or keep your own claim. The limitations period for TCPA claims is generally four years, and state periods vary, so the letter is a step in a sequence rather than a deadline of its own.

Where MercPrivacy Fits

MercPrivacy builds the file the letter rests on. Our spam call defense work assembles the evidence, identifies the U.S. company behind a campaign through carrier records, warm transfers and public filings, and organizes the enumerated contacts, exhibits and timeline so that the factual record is complete and accurate. When a matter needs a demand that asserts legal claims, a negotiation or a filing, a licensed attorney is engaged to do that work.

We are not a law firm, we do not give legal advice, and we never sign anything on your behalf or promise that a company will respond, pay or stop. Our fee is a straightforward recurring service fee for our own investigative, documentation and administrative work, set out in writing before any work starts.

Frequently Asked Questions

Do I need to send a cease-and-desist before suing a robocaller?

Federal law generally does not require it. Some state statutes do impose a precondition, such as Florida's requirement of a stop request and a fifteen-day cure period before a text-message claim, so check your state's current text. Even where it is optional, the letter puts the company on notice to preserve records, often surfaces the vendor and the claimed consent, and creates a dated proof that later calls came after you said stop.

What should a TCPA demand letter include?

Your name and number, the do-not-call registration date, a statement that no business relationship or consent exists, the enumerated calls with dates, times and numbers, the statutory provisions that fit the facts and the figures they provide, a preservation demand covering dialer logs and consent records, a request that the company produce its consent record, a clear stop instruction, and a deadline for a written response.

Should I demand a specific dollar amount in my letter?

State the per-violation figures the statutes provide and the number of calls you can prove; the company can do the arithmetic. Inflating the count or claiming figures the statute does not provide weakens the letter and can be used against you later. The negotiation of any actual settlement figure, and the release that comes with it, belongs with a licensed attorney rather than in your opening letter.

What if the caller ignores my letter?

Many do, and silence does not hurt your position. Keep documenting every call that arrives afterward, since each one now comes after written notice. The paths from there are small claims court, a claim handled by an attorney, or joining an existing class action if one exists. The limitations period for TCPA claims is generally four years, so the file, not the calendar, is usually the constraint.

Can MercPrivacy write the demand letter for me?

We assemble the evidence file and identify the company the letter should go to, which is the part most people cannot do alone. A demand that asserts legal claims, and any settlement or release that follows, is prepared and handled by the licensed attorney we engage when a matter requires one, because MercPrivacy is not a law firm and does not give legal advice.

This article is for educational purposes only and is not legal advice. MercPrivacy is not a law firm; when a matter requires legal representation, a licensed attorney is engaged. Statutory figures are the amounts the statutes provide, not predictions of any outcome, and laws change — verify the current text before relying on it.