From my past experience, they will still charge you. You need to fill in a dispute form and they will investigate the case upon receiving the form. You may not need to pay the amount (or the interest that goes with it) but it is best to call the centre to verify with them.

In a fraud transaction, such verifications occurs and the bank will block/cancel the old card and reissue you with a new one. Subsequently the bank will ask you to fill in a form which is called a transaction dispute form. Wait for a few days and see whether the transaction appears in your account. You'll need this info to fill into your form anyway if it does appears. (e.g Among info required are Date of Transaction, Transaction, Amount. Signature, declaration, etc)

Transaction dispute takes a while to clear off and there's nothing to be worried if you are not accountable for the transaction. It is absolutely wrong and gravely incorrect to say if you raise transaction dispute you'll automatically need not pay. There are many reasons why a person would raise the transaction dispute and the bank investigate throughly every one of the cases before they'll remove the transaction from your account. Note that the cardholder is viable for such transactions if there's an element of negligence leading to the transaction.

Next time, please reveal the bank's name as well - no sifu here can guess the bank's name. Different banks have slight different processes but generally you still need to fill up the transaction dispute.