@Flawless96
It won't solve your problem but I can tell you there are similar stories with Amazon and websites rewarding their users with Amazon gift cards (i.e. Swagbucks)
The same story happened to me before when I wanted to use a virtual card, I purchased an item and less than 10 minutes later my account was frozen.
The problem comes from Amazon but they're so stubborn and think only they are right.
Sorry to hear that man.

Did you ever manage to reach out to them?
Yep, it took me almost 1 year to get my account back. Tired to exchange emails with the verification service (which was asking me crazy stuff like my bank history), I used the chat and played the imbecile card by saying "Sir, what's happen, I can't log in my account, I tried to reset my password but nothing work"
They gave me my account back the same day lol
...
Yeah, such services are using authorized sellers of course. As I said it really come from Amazon and its borderline system