Nostalrius Begins - Quality wow vanilla realm (1.12)

Hello good sir, I was in Arathi Basin when an allance priest set a mindcontrol on me, then made me pass through the portal to outside, then I got disconnected, and now when Im trying to relog it says that my account is now banned.
I made an ingame request, and got a mail from GM Tigru who said that my account has been perma ban for hacking ??

I would like to understand , thanks

Account : Brouette

Thanks