As of 13 August 2026, AI can complain about your mobile phone bill.

What to actually do

1. Hand it to a person

   The route this page recommends

   A person who owns the outcome does this end to end, worth it when the failure is dear.

2. Use a tool built for this

   Second choice

3. Do it yourself

   The distant third

   A chat interface, no skill needed, and roughly 15 minutes until you can act on the result.

   How to actually do it

   1. Open the latest mobile bill, the relevant contract or tariff information, and your bank or payment record, then redact passwords, full payment-card details and unrelated personal data.
   2. Write down the disputed charge or charges, the dates, the amounts, what you expected to pay, and every contact you have already had with the provider.
   3. Paste those facts and any relevant bill text into a chatbot with the copyable prompt, asking it to identify gaps rather than fill them.
   4. Compare the table in the draft against the bill and payment record, correcting every amount, date, account reference and description that does not match.
   5. Check the provider's current complaints page or the contact details on your bill, and replace any unsupported contact or escalation instruction in the draft.
   6. Attach the bill, payment evidence and previous correspondence, then send the complaint through the provider's stated complaints channel and save the sent message and confirmation.

   Prompt

   Help me draft a complaint about a UK mobile phone bill. Use only the facts I provide and do not invent charges, dates, contract terms, legal rights or contact details. First list the disputed items in a table with the bill date, description, amount, what I expected and the evidence supporting each point. Then draft a concise complaint to [MOBILE PROVIDER] asking for [REFUND, CORRECTION, EXPLANATION OR OTHER REMEDY]. State the account reference as [ACCOUNT REFERENCE] only if needed, and do not repeat unnecessary personal data. Include a clear timeline, the action I want, a request for a written response and a neutral subject line. If the evidence is incomplete, list the missing information instead of guessing. Do not claim that a law, regulator or ombudsman will intervene unless I provide an official source confirming it. Keep the tone firm and factual. End with a checklist of every fact, amount and attachment I must verify before sending.

   Open it prefilled in ChatGPT or Claude, or copy it into Gemini, which takes no prefill link.