AEON Bank Reverses RM1 Billion Error After Kuching Customer Reports Surprise Credit

A RM31 reward campaign, a billion ringgit surprise

A Malaysian bank customer expecting to see less than RM1,000 in his account instead found an unexpected credit of RM1,000,315,879, carrying the description of a cash reward from an AEON Bank promotion. The transaction appeared on October 14, 2026, at about 10:36 am. By the end of the day, the bank had reversed it.

The customer, Wan Muhammad Fairus, a 33-year-old clinic manager and father of four from Samariang in Kuching, Sarawak, contacted the bank after checking his app at about 11 am. He said his account was temporarily blocked until 4 pm while the problem was resolved, and his original money remained unaffected.

The scale of the error was extraordinary even beside the promotion named in the transaction. The Merdeka and Malaysia Day campaign offered individual rewards of RM31 and had a total prize allocation of RM12,834. The unexpected credit was more than 77,000 times that entire allocation.

AEON Bank said in a statement on October 14 that an issue related to a recent promotion had caused some account balances to display incorrectly. It said the matter was promptly resolved and no accounts or information were compromised.

What Fairus saw when he opened the app

Fairus was in his bedroom preparing to make a banking transaction when he noticed the enormous amount. His account, he recalled, should have contained less than RM1,000. He tried logging out and back in, but the figure remained.

Fairus, the clinic manager whose screenshot drew attention on Threads, described his reaction:

I was completely stunned! My hands were shaking as I held my phone. I tried logging out and logging back in, but the money was still there.

Fairus then checked his bank statement and asked ChatGPT to help him interpret the number. The amount, RM1,000,315,879, was just over one billion ringgit. Written out, that is one billion, three hundred and fifteen thousand, eight hundred and seventy nine ringgit.

The unexpected credit also arrived around his wife's birthday. He said both of them were in disbelief, making an already unusual discovery especially memorable for the family.

Fairus suspected an error rather than a genuine windfall. He said he had neither joined a promotion nor made a purchase that would explain the credit, and he contacted AEON Bank for clarification.

Why the transaction looked like a promotional payment

The screenshot showed the entry labelled "Bank adjustment" and placed under "Rewards – Promotion/Campaign". Its description referred to a cash reward for the Merdeka / Malaysia Day 2026 Campaign, Cycle 6.

Those labels gave the unexpected amount the appearance of a routine promotional credit. A bank adjustment is an entry used to change an account balance. In this case, the accompanying description connected that entry to a named rewards campaign.

The actual promotion ran for six weeks, from August 17 to September 27, 2026. Customers who spent at least RM15 using DuitNow QR could qualify for a chance to receive RM31. DuitNow QR lets customers make payments by scanning a payment code with a compatible banking or payment app.

The campaign selected 69 winners each week. Across six weeks, that meant 414 winners, with RM31 for each producing the stated total of RM12,834. The screenshot's reference to Cycle 6 matched the campaign's six rounds.

The comparison explains why Fairus immediately suspected something had gone wrong: a promotion built around payments of RM31 had appeared in his account as a credit exceeding RM1 billion. His normal balance had been below RM1,000, making the unexpected amount more than a million times that upper threshold.

How the bank corrected the account

Fairus said bank staff told him a technical problem had occurred. The bank temporarily blocked his account while it dealt with the issue, then reversed the mistaken transaction. A reversal removes or cancels an earlier account entry so the balance can be corrected.

Fairus described the outcome after the bank completed its work:

Everything was resolved after the bank reversed the transaction, and the money originally in my account was unaffected.

For Fairus, the immediate practical disruption was losing access to the account until 4 pm. Once the correction was complete, he said, the money he had held before the error was still there.

The bank's October 14 statement described the problem as incorrect balances connected to a recent promotion. Its reference to "some" balances indicated that its response covered more than the single screenshot circulating online. The statement gave no count of affected customers or detailed technical explanation.

AEON Bank also said no accounts or information were compromised. Its stated outcome was a prompt correction of the display problem; Fairus described his own account being restored through the reversal of the unexpected credit.

The sequence from discovery to reversal

The campaign dates and Fairus's account of the day show how a promotion that had already ended became attached to an unexpected October transaction:

• August 17 to September 27, 2026: The Merdeka and Malaysia Day campaign ran for six weeks, offering RM31 each to 69 winners per week.
• October 14, about 10:36 am: The RM1,000,315,879 entry appeared with a description referring to Cycle 6 of the campaign.
• October 14, about 11 am: Fairus checked his banking app and contacted the bank after noticing the amount.
• October 14, until 4 pm: His account was temporarily blocked while the bank addressed the technical issue, according to Fairus.
• October 14: The erroneous amount was reversed, and AEON Bank issued its statement about incorrect balances.
• October 15: Fairus said he was still waiting to learn the details of a possible reward for reporting the error.

The correction took place on the same day as the discovery. The much smaller reward mentioned afterward was a separate gesture of appreciation, rather than the billion ringgit entry that had appeared under the campaign description.

Why Fairus left the money untouched

Fairus said he never considered spending the unexpected money because he knew it did not belong to him. He was also concerned that using money credited by mistake could lead to legal trouble.

His response was straightforward: check the amount, recognise that it did not fit his account activity, and ask the bank to investigate. He left the credit untouched while the bank worked through the correction.

Threads users responded with jokes about becoming a billionaire overnight, and some playfully asked him for loans. The official AEON Retail Malaysia account also joined the conversation. Fairus's follow-up, however, focused on the bank removing the erroneous amount and thanking him for making contact quickly.

A possible thank you for reporting the mistake

Bank representatives told Fairus they wanted to give him a reward for alerting them. He said they would contact him by email with further details. As of October 15, he had received neither the reward nor confirmation of what it would be.

Fairus described the bank's proposed gesture:

The bank also mentioned that they wanted to give me a reward, but I haven't received anything yet and don't know what it will be. Perhaps I'll have to wait for an email notification or an announcement from them.

Fairus hoped a small reward might allow him to treat his wife around her birthday. He also said doing the right thing mattered regardless of the amount involved. His account had returned to normal, leaving the family with an unusual story rather than an unexpected fortune.

Key Points

• Fairus found an erroneous RM1,000,315,879 credit in his AEON Bank account on October 14, 2026.
• The transaction referred to a campaign offering RM31 rewards, with RM12,834 allocated across 414 winners.
• He contacted the bank and said he did not use the unexpected money.
• The bank reversed the entry that day; Fairus said his original balance was unaffected.
• AEON Bank said a promotion caused some balances to display incorrectly and that no accounts or information were compromised.
• A possible reward for reporting the mistake was still awaiting confirmation on October 15.