How to File a Complaint Against a Gambling Operator

Most gambling disputes involve a handful of recurring issues: delayed or refused withdrawals, voided bets, bonus terms, account closures and failures to honour self-exclusion or limits. If you have a problem with a licensed operator, there is a structured route to resolve it. This guide sets out each stage, using Great Britain as the main example because its process is clearly defined, with notes on how other markets compare. It is general information, not legal advice.

Before you start: gather your evidence

Strong complaints are specific and documented. Collect:

• Account details: username, registered email and the operator’s company name and licence number.
• Dates and times of the relevant bets, games, deposits or withdrawals.
• Screenshots of balances, bet slips, error messages and game histories.
• Transaction records from your bank or e-wallet.
• Copies of the terms and conditions and any bonus terms in force at the time.
• All correspondence, including live chat transcripts (ask for a copy if you cannot save one).

Write a short timeline. It helps you stay clear and helps whoever reviews the case.

Stage 1: The operator’s complaints procedure

Live chat is useful for quick fixes, but a chat conversation is often not logged as a formal complaint. If the issue is not resolved immediately:

1. Find the complaints procedure. Licensed operators must publish one, usually in the terms or help section.
2. Submit a formal complaint in writing, using the stated channel. Use the word “complaint” explicitly.
3. State the facts, the outcome you want and the term or rule you rely on. For example: “I request payment of my £450 withdrawal, which was refused on 3 September. I complied with all bonus terms; please identify the specific term you believe I breached.”
4. Keep it factual and polite. Emotional or abusive messages weaken your case and can lead to account closure.
5. Note the date you submitted it and any reference number.

Time limits in Great Britain

Under the Gambling Commission’s requirements, the entire internal complaints process, including any internal escalation, must take no longer than eight weeks from when the operator receives the complaint. The clock can pause if you do not respond to reasonable requests. At the end, the operator should send a final response explaining how to escalate to an independent ADR provider.

Stage 2: Alternative dispute resolution (ADR)

ADR is an independent service that reviews a dispute between a consumer and a business without going to court.

• In Great Britain, every licensed operator must offer access to an approved ADR provider, named in its complaints procedure. The Independent Betting Adjudication Service (IBAS) is one of the most widely used.
• ADR is free to consumers in Great Britain.
• The ADR provider looks at whether the operator applied its terms correctly and fairly.
• What happens next, including whether the decision binds the operator, depends on the ADR provider’s own rules. Check these before you start.
• ADR usually only accepts a case once the operator’s own process is complete or the eight-week limit has passed.

Other markets

• Malta: the Malta Gaming Authority runs a Player Support function that handles complaints about its licensees.
• EU generally: the EU’s online dispute resolution (ODR) platform was shut down in July 2025, so complaints now go directly to the relevant ADR body or regulator in the operator’s licensing country.
• Elsewhere: many regulators accept player complaints directly. Our country regulation profiles explain the route in each market.

Stage 3: Telling the regulator

Most regulators, including Great Britain’s Gambling Commission, do not adjudicate individual disputes. But they do want to know about potential rule breaches, such as failure to honour self-exclusion, unfair terms, misleading advertising or failure to follow the complaints process. Reports feed into compliance and enforcement work and have contributed to significant fines in the past. You can usually report through the regulator’s website.

Other routes

• Your bank or card provider. If a payment was unauthorised, or you paid for a service you did not receive, ask about chargeback or dispute options. Time limits apply. In Great Britain, gambling with credit cards has been banned since April 2020, so most disputes involve debit cards or e-wallets.
• Courts. Small claims procedures exist for lower-value disputes, but court is usually a last resort. Consider legal advice first.
• Data protection authority. If your complaint concerns misuse of personal data, or an unanswered subject access request, you can complain to the national data protection regulator.

Common complaint types and what helps

Issue	Key evidence	Useful question to ask
Withdrawal refused	Bonus terms, transaction history, KYC uploads	“Which specific term was breached?”
Voided bet	Bet slip, market rules, time of bet	“Which palpable error or market rule applies?”
Account closed with balance	Account statement	“When will my remaining balance be returned?”
Self-exclusion not honoured	Exclusion confirmation, deposits made during exclusion	“How did you fail to identify my exclusion?”
Limits ignored	Limit confirmation, later deposits	“Why were deposits accepted above my limit?”

See withdrawals and player fund protection and know your rights as a gambling consumer for background on what operators owe you.

If the operator is unlicensed

The steps above depend on a licence. With an unlicensed site there is usually no ADR provider and no regulator with reach. Stop depositing, keep evidence, contact your bank promptly and report the site. Our guide to checking a licence can help you avoid this situation next time.

Looking after yourself

Disputes involving money lost or withheld can be stressful, and sometimes a complaint reveals a wider problem, for example that an operator accepted deposits you could not afford or ignored your self-exclusion. If that resonates, support is available; see our help directory.