Solved
Disgusting censorship mechanism and TOS team
Anyway, I want to reiterate that just because I played the game a few times on a public computer in an Internet cafe, I have no idea how the damn hacker was able to bypass my Steam token verification...
The EA staff who work here on AHQ cannot help you directly with account-related issues, such as bans, only the TOS team can help you.
If you feel you have been incorrectly banned, the only thing you can do is to dispute any action taken against your EA account by following the steps in this article:
https://help.ea.com/en/help/account/information-about-banned-or-suspended-accounts/
There is also this AHQ guide on bans and suspensions :
https://answers.ea.com/t5/EA-General-Questions/EA-Bans-and-Suspensions-How-they-work-and-how-to-get-in-contact/m-p/9754200#M355907
It is my understanding that you can appeal a ban a number of times.
