I've been hacked a few years ago. But it was in the several tens of thousand of dollars (for me in a matter of hours). I've deactivated my account while the hacker was using it.
It took a stressful week to settle the matter with AWS. And not at any point i've been in a position to influence anything. I was just there for the ride. In the end they erased the debt.
A few years after that, i've reactivated my account. Some leftover resources were there, so i cleaned but i missed some, resulting in another charge, less expensive. I've requested to be reimbursed. First they objected, but then with some references to the previous incident i gave them they complied.
Do not give up. Do not pay.