Guild Wars 2

I have just received mail from GM Kaine about my account incident #120908-002631. He/She said that i used unauthorized third-party application and the account will no longer be accessible and will not be reactivated. I’m so sad and really want to cry out loud.
I’m only use Team Speak 3 to communicate with my friends. Is this count as a ‘’unauthorized third-party application’’ ? In the mail He/She did not name the “unauthorized third-party application” they accused me. Is this a one-side argument ? They say i’m guilty because i do something which i’m not even do violate their rule and boom ban never lift
What do i do now ? I don’t want give up everything easily like this. My friends, my guildmate are waiting me come back and i spent a lot of time to reach current stage. Please somebody give me advice how to deal this case

Teamspeak should be fine. They believe you were using some sort of application that would either play for you (a bot) or would somehow give you an advantage (examples would be hacks that allow teleporting etc) not sure if any hacks exist for the game so I’d say maybe they think you were botting.

I was offline 2 days to deal with my business, when i came back and log in my account was banned. In wiki they said a lot of account was hacked and use bot to spam gold selling or whatever. They says ‘’open a ticket so we can give back to the rightful owner" but this time they says “The account will no longer be accessible and will not be reactivated”
Just wow, they think i’m a real gold seller with only 3 gold in bag and no connection with random selling gold organization.