My Apple Pay was used for illegal activities
I just found out that my credit cards have been blocked by two banks because an unknown user has made three transactions for £50 on one of them and £50 on the other card. Both my cards are registered solely on Apple Pay. This mean Apple Pay must surely have allowed a third party to make illegal purchases through my account. As Apple Always tells you by email or text that someone has accessed your account, and considering I did not receive anything of the sort, am I to believe, Apple Community, that it was a worker at Apple that commited this Fraud? I am not implying anything about Apple, I'm just genuinely concerned for my heart which has medical complications. Thanks.
MacBook Pro 13″, macOS 12.7