What do I do if I suspect unauthorised use of my credit card?
If you suspect that fraudulent transactions have been made on your credit card, you should call our fraud department immediately on 1300 705 750 from Australia, or +61 2 8299 9534 from overseas. Our staff will be able to provide more information about the transaction in question and cancel the card if required.
https://www.beyondbank.com.au/need-help/what-do-i-do-if-i-suspect-unauthorised-use-of-my-credit-card