How to complain and actually win

Put it in writing even if you also phone. Email creates a timestamped record; a call does not, and every subsequent step depends on being able to show what you asked for and when.

Structure it in four short parts: what happened, with dates and account or reference numbers; why it is a problem, referring to the relevant right if you know it; what you want, stated as a specific outcome; and by when. Say explicitly that you are making a formal complaint and ask for a complaint reference number — businesses distinguish internally between 'queries' and 'complaints', and only the latter is tracked and reported to regulators.

Keep it short and unemotional. Three paragraphs with dates gets handled; two pages of frustration gets skim-read. The person reading it did not cause the problem and has limited authority — your goal is to give them something easy to escalate.

Under Financial Conduct Authority rules, regulated firms must acknowledge a complaint promptly and issue a final response within eight weeks. Energy suppliers work to a similar timetable. Once that has passed, or you receive a deadlock letter, the ombudsman door opens.

Financial services — banks, insurers, lenders, mortgages, pensions, investments, credit, buy-now-pay-later: the Financial Ombudsman Service on 0800 023 4567. It handles the great majority of money complaints, including scam reimbursement disputes and insurance claim refusals.

Energy and communications: the Energy Ombudsman and the Communications Ombudsman, both run by Ombudsman Services, with some telecoms providers instead belonging to CISAS. Your provider must tell you which scheme it belongs to.

Housing: the Housing Ombudsman for social landlords and member private landlords in England, and the Property Ombudsman or Property Redress Scheme for letting and estate agents, membership of which is compulsory.

Councils and adult social care: the Local Government and Social Care Ombudsman in England, with separate public services ombudsmen in Scotland, Wales and Northern Ireland.

The NHS: complain to the provider first, then to the Parliamentary and Health Service Ombudsman in England, or the equivalent in each devolved nation.

Rail: the Rail Ombudsman. Aviation: an ADR scheme approved by the Civil Aviation Authority, which varies by airline. Legal services: the Legal Ombudsman. General retail: Citizens Advice and Trading Standards rather than an ombudsman, then the small claims track.

Lodging is online in every scheme and takes fifteen to thirty minutes. You will be asked for the business name, what happened, what you have already done and what outcome you want.

The scheme first checks that you complained to the business and gave it the required time. This is why the reference number and the eight-week clock matter.

Most schemes then refer the matter back to the business's senior complaints team with a short window to resolve it directly. A substantial proportion settle at this stage — exactly the effect the case fee is designed to produce.

If it does not settle, an investigator considers the evidence and issues a view, which either party can reject and escalate to a final decision by an ombudsman. That decision binds the business if you accept it. It does not bind you: rejecting it preserves your right to go to court.

Timeframes run from a few weeks for simple cases to many months for complex ones. You do not need a lawyer, and in most schemes you cannot recover legal costs — which is a strong argument for not engaging one.

For a straightforward consumer purchase, the route is the Citizens Advice consumer service, which advises you and refers matters to Trading Standards — who in England and Wales do not accept reports directly from the public. Advice Direct Scotland and Consumerline in Northern Ireland do the same job.

If you paid on a credit card and the purchase was over £100 and up to £30,000, a Section 75 claim against the card provider is a parallel and often faster route, and works even if the retailer has gone out of business. Debit and credit card chargebacks are a separate scheme-rule route with their own time limits.

The small claims track handles most consumer disputes up to £10,000 in England and Wales, without lawyers and with modest fees. Money Claim Online lets you file in about twenty minutes. Scotland uses the simple procedure with its own limit.

For systemic conduct rather than your case, report to the regulator: the Competition and Markets Authority for consumer protection, the Financial Conduct Authority for financial firms, Ofcom for telecoms, Ofgem for energy and the Information Commissioner's Office for data protection. None will resolve your dispute, but they act on patterns.