Starting off the new year right - by getting frauded

Woke up this morning to 4000 spam emails and that someone had bought and redeemed a £100 amazon gift card on my account.The annoying part is that I recently had some of my gaming accounts hacked so I'd already changed all of my passwords.I've had 2FA on everything since forever, but apparently it's all just security theatre 'cause it seems there was no obstacle to them doing this.Guess I'll try getting amazon to reimburse it but I have terrible luck