Charges on your debit or credit card you don't recognize. Here are the steps you can take to investigate an unauthorized transaction. First, it's a good idea to lock your card via the Comm Bank app or in your NetBank account settings for peace of mind while you look into the charge. If you don't recognize the business name, tap on the business name, confusing in the Comm Bank app or search the internet in NetBank. This could help identify who charged you. You can also search online via the Australian Business Register (ABN lookup) at abr.business.gov.au. If you're a joint account holder, it's worth checking if the other account holder has authorized the charge to your account. Need more support? Message us in the Comm Bank app to raise a dispute and we'll help investigate the charge. If you didn't authorize the charge, we will start the dispute process by canceling your card and reissuing a new one. Your new card will be with you in 7 to 10 business days. Debit card holders can still access funds using cardless cash at our ATMs or your digital wallet like Apple Pay or Android Pay. We'll aim to resolve your dispute as quickly as possible, usually within 7 to 10 business days. If successful, the refund will be credited to your account shortly after the dispute is resolved. Once your new card arrives, it's important to activate it in the Comm Bank app or NetBank and reset your PIN. You'll also need to update any regular payments or direct debits with your new card number. For more information, message us at commbank.com.au/messaging to speak with a specialist or visit our website.