What do I do about my false ban now?

Hello dear server and staff.

A couple days ago, on friday 8th, June I recieved a mail with gold from an unknown character and my friend messaging me on skype saying he sent me gold for what I've done from him, the gold I lend him previously and so on, so I just accepted the gold and continued playing.
Not so long after, about 8 hours to be precise, I logged off of the game and when I returned back, my account had already been banned saying "The account has been terminated due to bot".
I had no idea what happened, I made a ban appeal which was opened just until now where the support told me that the gold I recieved was from some sorts of gold exploit and that its no the community's best interrest for my ban to remain.
What I would like to ask is, how do I exactly prevent from this happening if I recieve a mail full of gold?

I do understand that this, what im saying, is just a word against word, but I have not done anything against the server rules myself nor anybody on my account, I just recieved an exploited gold from - what the support told me, got permanently banned for it and my ban appeal got declined from it.
Hereby im here asking as the summer break is just starting, should I actually just quit wow over something I couldn't really affect or is there any chance of my ban being lifted sooner than in one month when my ban appeal can actually be opened again?

Thank you very much for your time.