[2023] Gaijin support keeps me banned despite having evidence of being hacked.

No one on this forum can help you.
I am sorry, but you are responsible for your account password protection. We offer you multiple ways to protect your account (2FA etc) but it's you who need to enable them.

3.5. The User shall keep the Account login and password strictly confidential. The User is solely responsible for maintaining the confidentiality of their login details and for all activities that occur on their Account, whether authorized or not (for example, if the Account credentials become known to third parties or in the event of unauthorized access). Any use of the Account with the User’s login and password shall be carried out by the User. The User shall immediately notify Gaijin if there is any breach or misuse of the User’s Account.

Please discuss your case with Support, on forum, no one can help with your problem.