Contact the merchant
Explain the problem and the fix you want. Keep receipts, emails and screenshots.
Tell your bank quickly
Report a disputed, unauthorised or mistaken transaction as soon as possible and note the reference number.
Ask for a chargeback
If the merchant won't fix it, ask your bank to dispute the transaction under the card scheme rules before the time limit passes.
Make a formal complaint
Write to your bank with 'complaint' in the subject line, a clear explanation and copies of documents.
Escalate to AFCA
If your bank doesn't resolve it, lodge a free complaint with AFCA on 1800 931 678 or online.