How to write a gambling complaint timeline an ADR body can use

Build a dated, factual timeline. Give each event its own row with the date and time (including time zone), what happened, who you dealt with, the bet, round or transaction ID, the amount, and the evidence file that proves it. Keep what happened separate from what you suspect. Then put a three-line summary on top, so an operator's complaints team, an alternative dispute resolution (ADR) body or a regulator knows what the dispute is before reading the detail.

Our gambling complaint evidence checklist explains what to collect. This page explains how to arrange it so an outside reviewer can follow it quickly.

Why does a timeline help a complaint?

The people who read complaints did not see what happened. They need to rebuild events from records, often across chat logs, emails, cashier entries and game histories. A timeline does that work for them.

Dispute bodies ask for exactly this kind of structure. In Great Britain, the Gambling Commission tells players to give the business all the details, including dates, times and amounts, and to keep a copy of everything they tell it (Gambling Commission, how to complain). IBAS, an ADR provider in Great Britain, asks complainants to set out their dispute "clearly and concisely": what they did and when, what outcome they expected and why, the actual outcome, the operator's explanation, and any contact since (IBAS, how to raise a dispute). The Malta Gaming Authority's complaint form asks for the website, operator, username, game, disputed amount and the date and time of the incident (MGA, lodge a complaint).

A good timeline answers all of those in one place.

What should the timeline template look like?

Use a spreadsheet or a simple table. One row per event, in date order.

How to fill each column:

• Date and time (time zone). Use the operator's timestamp where it exists. Write the time zone every time: BST, GMT, ET, CET. Operators often record in UTC or their own local time, and a missing time zone is the fastest way to make two records look inconsistent.
• Event. One plain sentence. "Support said the withdrawal was approved" rather than "they lied to me again".
• Operator contact or agent. Agent name or ID, channel (live chat, email, phone) and any ticket number.
• ID. The bet ID (sportsbook), game round ID (casino), hand number (poker), or cashier transaction reference. Our guide to bet IDs, round IDs and hand histories shows where to find each.
• Amount. Currency included. Note whether it is real money or bonus funds.
• Evidence file. A numbered file name that matches the row. Number files in the order they appear (01, 02, 03) so a reviewer can open them in sequence.
• Next action. What you did or are waiting for. This column keeps you organised and shows the reviewer you followed the process.

How do you link chat logs and emails to IDs?

The strongest timelines connect what support said to what the records show.

1. Quote the key sentence, not the whole chat. In the Event column: Agent (ID placeholder) said: "Your withdrawal is approved and will be processed within 24 hours." Attach the full transcript as the evidence file.
2. Put the ID in both places. If the chat discussed a specific bet or withdrawal, write its ID in the row and highlight it in the transcript.
3. Match the clocks. If chat timestamps use a different time zone from the cashier, convert one and say so: "chat times shown in UTC, converted to BST".
4. Keep originals. Save emails in their original format (for example .eml or a PDF printed from the mailbox) rather than forwarding them, which can change headers and dates.
5. Use the operator's reference numbers. In Ontario, iGaming Ontario says the operator issues a complaint number when you submit a formal complaint (iGO player support). Put it in the summary and the relevant rows.

How do you state uncertainty without weakening the complaint?

Separate three things, and label them:

• Fact: what a record shows. "The cashier shows withdrawal WD-placeholder-002 as 'cancelled' at 2026-09-05 10:02 BST."
• What you were told: what the operator said, with its source. "Agent said in chat the cancellation was due to a bonus breach."
• What you believe or do not know: "I do not know which bonus term was breached. I asked twice (rows 7 and 9) and was not told."

Saying "I do not know" is not a weakness. It tells the reviewer exactly where the operator's explanation is missing, which is often the heart of the dispute. What weakens a complaint is a guess presented as fact.

What are the most common timeline mistakes?

• Emotional narrative only. Pages of how the experience felt, with no dates or IDs. Reviewers cannot act on it.
• Cropped screenshots. Cutting off the date, time, URL or username removes what makes a screenshot useful. Capture the full screen, then crop a copy if needed.
• Missing time zone. Times without a zone cannot be matched to the operator's logs.
• No transaction reference. "I deposited about £100 last week" cannot be traced. "TXN-placeholder-001, £100, 3 September" can.
• Edited originals. Never alter a screenshot or document. Annotated copies are fine if you also keep and offer the unedited original. The MGA's complaint form warns that fictitious or fabricated details will lead to immediate rejection of the complaint.
• Mixing several disputes. One timeline per dispute. If a bonus issue and a verification issue overlap, say so, but keep them in separate sections.
• Skipping the operator's process. In Great Britain you cannot take a complaint to ADR without first going through the operator's complaints process (Gambling Commission, ADR). In New Jersey, the Division of Gaming Enforcement asks for copies of your original complaint to the casino and the casino's response (NJ DGE). Your timeline should show that step.

Worked example with fictional placeholders

This is an illustration, not a real case. Player A has an account at "Example Casino", is based in Great Britain, and disputes a cancelled withdrawal.

Summary (top of the complaint): Player A (username: placeholder) deposited £100 on 3 September 2026 and requested a £400 withdrawal the same evening. On 5 September the withdrawal was cancelled and the balance removed, citing a bonus breach. Player A did not opt in to a bonus and asks for the £400 withdrawal to be paid or for the specific breached term to be identified.

Timeline:

Open questions (labelled as such): which bonus term was breached (asked in rows 7 and 9, not answered); whether a bonus was credited automatically (the cashier screenshot in row 1 shows no bonus line).

Notice what the example does not include: no guesses about the operator's motives, no adjectives, and no evidence that does not support a row.

When should you send the timeline, and to whom?

Send it first with your formal complaint to the operator, then update it at each stage. In Great Britain, the Gambling Commission's guidance to businesses says complaints should be acknowledged within 3 working days, and the whole complaints process should take no longer than 8 weeks (Gambling Commission, timescales). The final letter should explain how to escalate to an independent ADR provider. One date note: on 15 May 2026 the Commission updated its player guide to ADR, recording the "removal of information relating to alternative dispute resolution" following updates to the Digital Markets, Competition and Consumers Act 2024 (Gambling Commission, ADR). Rely on the ADR provider named in the operator's final response, and check the Commission's current pages before you escalate.

If you go to ADR, timing matters. IBAS, as of October 2026, says it may decline a dispute if more than a year has passed since you last tried to resolve it, that it typically takes 8 to 10 weeks to reach a decision once a claim is submitted, and that its service is free for most customers with a complaint. Its rulings are not legally binding on customers, but gambling businesses must follow them up to £10,000 (IBAS, consumer FAQ). A timeline sent promptly and in order helps a reviewer within that window; it cannot decide the outcome. Our guide to what happens after a gambling complaint walks through each stage, and the complaints hub has country routes, including the United Kingdom, Ontario, New Jersey and Malta.

What to do next: checklist before you submit

• A three or four sentence summary sits at the top, ending with what you are asking for.
• Every row has a date, a time and a time zone.
• Every money event has an ID and an amount, with currency.
• Every row that relies on evidence names a numbered file.
• Facts, what you were told, and what you do not know are labelled separately.
• Screenshots are full and unedited; any annotated copies are marked as such.
• Key chat lines are quoted, with full transcripts attached.
• The operator's complaint reference and final response are included.
• You have kept your own copy of everything you send.
• Nothing in it includes your password or full card number. No dispute body needs them, and anyone who asks for them is not a dispute body. Read about why gamblers are targeted again before replying to anyone who offers to "handle" your complaint for a fee.