As of 13 August 2026, AI can draft a business complaint letter.
Most people should hand this to a purpose-built tool.
Can you do it?
5 minutesto a draft.
15 minutesto something you’d act on.
Cost, all in£0
Skill needednone
Who has to check ityou
What the alternative costsThe supplied tool data gives no price for a human complaint-letter service, so no comparable pound figure is stated.
If this goes wrong: the letter makes an unsupported accusation or damages a useful business relationship, and you have to correct the position yourself.
What to actually do
Use a tool built for this
The route this page recommends
Do it yourself
Second choiceA chat interface, no skill needed, and roughly 15 minutes until you can act on the result.
How to actually do it
- Open your order, contract or account records and gather the recipient's name, address, reference number, purchase date, amount and the exact problem.
- Open the relevant emails, messages, invoices, photographs and delivery records, then note the dates of previous contact and the replies you received.
- Decide the specific remedy you want, such as a refund, repair, replacement or written explanation, and write down any genuine deadline supported by your records.
- Paste the prompt into ChatGPT, Claude or Gemini and replace each bracketed slot with your facts, leaving out anything you cannot support.
- Compare the draft and its final checking list against your records, correcting every date, amount, name, reference and description of what happened.
- Remove any legal claim, threat or deadline that you cannot substantiate, then send the final letter through the appropriate business contact channel and keep a copy with its attachments.
Prompt
Draft a firm, professional complaint letter to [BUSINESS NAME] about [PRODUCT OR SERVICE]. The letter is from [YOUR NAME OR BUSINESS NAME] and should be sent to [RECIPIENT OR DEPARTMENT]. Use only the facts below and do not invent details, legal rights, deadlines, losses or evidence. Facts: - What I bought or agreed to: [DETAILS] - Date of purchase or agreement: [DATE] - Reference, order or account number: [REFERENCE] - What went wrong: [FACTUAL DESCRIPTION] - Dates of contact so far and the responses received: [DETAILS] - Evidence I hold: [INVOICES, PHOTOS, EMAILS OR OTHER RECORDS] - Remedy I want: [REFUND, REPAIR, REPLACEMENT, EXPLANATION OR OTHER OUTCOME] - Deadline, if one is genuinely justified by my records or agreement: [DETAILS] Write a concise letter with a subject line, a factual account, the effect of the problem, the remedy requested and a clear next step. Keep the tone firm but non-threatening. Do not claim that the recipient broke a law unless I have supplied that exact legal basis. Do not use exaggerated language or make demands that are not supported by the facts. Mark any missing information as [CHECK]. After the letter, list every factual statement, date, amount and requested action that I must check against my records before sending.
Open it prefilled in ChatGPT or Claude, or copy it into Gemini, which takes no prefill link.
Hand it to a person
The distant thirdA person who owns the outcome does this end to end, worth it when the failure is dear.
What it gets wrong
- AI cannot decide whether your requested remedy is commercially sensible or proportionate to the loss.
- AI cannot establish that the other business is legally at fault from a one-sided account.
- AI cannot know which facts matter most to your relationship with the recipient or your negotiation strategy.
- AI cannot confirm that your evidence proves what the letter says it proves.
- AI cannot take responsibility for allegations, deadlines or decisions made in your name.
Even on a YES, the friction has a name: stakes of error, judgement under ambiguity and context depth.
How we scored this
Five axes, each scored nought to two by hand: ten means AI carries the task cleanly, and the thresholds that turn a total into YES, PARTLY or NO are published in the methodology. Each axis name links to its definition.
| Axis | Score (0–2) |
|---|---|
| Output | 2 |
| Inputs | 2 |
| Verification | 2 |
| Liability | 1 |
| Effort delta | 2 |
| Total | 9 / 10 |
The methodology and its thresholds are published in full.
FAQ
- Can AI write a complaint letter to a business?
- Yes. Give it the documented facts, the outcome you want and the evidence you hold, then check every detail before sending. It can improve the structure and tone, but it cannot decide whether an accusation or legal claim is justified.
- What should I include in a business complaint letter?
- Include the relevant transaction or agreement, reference number, dates, factual description of the problem, previous contact, supporting evidence and the remedy you want. Keep the account specific and separate what you know from what you suspect.
- Can AI make my complaint letter sound more professional?
- Yes. It can make the letter clearer, firmer and less emotional while preserving your facts. Check that the rewrite has not weakened your requested remedy or added claims that you did not provide.
- Should I use a solicitor for a business complaint?
- Not usually for a straightforward first complaint that you can support with your records. If the dispute involves substantial money, threatened court action, a contract interpretation or a serious allegation, ask a solicitor to advise you. AI output is not professional advice.
Nearby answers
Assessed by gpt-5.6-luna (gpt-5.6-luna) on 2026-08-13, second-checked by an independent model. Wrong somewhere? Email [email protected] and it gets re-checked.
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