How to Write a Customer Complaint Letter That Gets Results

A clear complaint letter often solves a billing, product or service problem without a lawsuit. It also becomes evidence if you later file a claim or chargeback.

What to include

• Your contact information and account or order number.
• Dates and a short factual description of what went wrong.
• What you want, such as a refund, repair or replacement.
• A reasonable deadline, such as 14 days.
• Copies, not originals, of receipts and photos.

Where to send it

• The company's customer service or legal address, by a method that proves delivery.
• An email copy to a named contact.
• A copy to your card issuer if you plan a dispute.

If you get no answer

1. Follow up in writing.
2. File a complaint with your state attorney general or the Consumer Financial Protection Bureau where relevant.
3. Dispute the charge with your card issuer within its deadline.
4. Consider small claims court. See our guide to demand letters.

Tips

• Stay calm and factual.
• Keep a log of calls and names.
• Avoid threats you do not intend to carry out.

Structure of a persuasive complaint

A good complaint letter is short, factual and specific. The first paragraph says what you bought, when and what went wrong. The second says what you have already done to fix it, including dates of calls and the names of people you spoke with. The third states exactly what you want and by when. Avoid insults and long personal stories, because the person reading it may be a different employee than the one who caused the problem.

Evidence to attach

• Receipts, order confirmations and account statements.
• Photos or video of defects or damage.
• Copies of warranty or terms of service.
• Previous emails and chat transcripts.
• Repair estimates or inspection reports.

Choosing the right remedy to ask for

1. Refund of the purchase price.
2. Repair or replacement.
3. Credit toward future services.
4. Reimbursement of consequential costs, if reasonable.
5. Cancellation of a charge or contract.

Escalation options

• A dispute with your credit card issuer, with strict deadlines.
• A complaint to your state attorney general or consumer protection office.
• A complaint to a federal agency for financial products or telecommunications.
• Better Business Bureau or industry ombuds programs.
• Small claims court for amounts within its limit.

Special cases

For defective cars, the lemon law may apply. For online sales, platform dispute processes may have short windows. For insurance denials, follow your policy's appeal process. See our guides to warranty rights, chargebacks and small claims court.

Frequently asked questions