A useful complaint letter helps the recipient understand what happened and what would resolve it. Precision is more effective than anger expressed through capital letters, threats, or a long history of unrelated disappointments.

Build a short factual record

Gather the order or booking reference, relevant dates, a description of the problem, and any prior attempts to resolve it. Share only information needed to identify the transaction. Do not send full payment-card details or identity documents in an ordinary email unless a verified process specifically requires them. Separate observation from interpretation. “The package arrived on Tuesday with a cracked lid” is a fact you can document. “Your team does not care about customers” is a judgment that does not help someone process the claim.

Sample complaint

Example to adapt
Subject: Request for replacement — order [reference] Hello Customer Service, I received order [reference] on [date]. The [item] arrived with [specific problem], which means I cannot use it as intended. I have attached [relevant photograph or document]. I contacted [channel] on [date] and was advised to [previous instruction, if any]. The issue is still unresolved. I would appreciate [specific requested remedy]. Please confirm the next step and whether you need any additional information. If a return is required, please send the applicable instructions. Thank you, [name] [appropriate contact information]

Ask for the outcome you want

Choose a remedy that matches the problem: a corrected bill, a replacement, a repair, or an explanation. Check the seller's published process before making assumptions about available remedies. This template is communication guidance, not a statement of your legal entitlement. If timing matters, explain why and ask for a response by a reasonable date. “Please respond by Friday so I can arrange an alternative” is clearer than “Resolve this immediately.”

Keep the next exchange organized

Save the message and any reference number. When you follow up, add new information and refer to the existing case instead of restarting the entire story. If the usual support channel cannot help, use the organization's published escalation process. Keep the tone firm enough to state the problem and calm enough that the requested action remains easy to find.

Make the next draft yours.

Adapt examples to your situation and verify names, details, and requirements before sharing.Suggest a correction →