Playerauctions.com Playerauctions.com won't pay me, scammed me, don't sell through this company, Internet

I was selling account on Playerauctions.com , buyer confirmed delivery of this account, He changed it's username to "Dr Mx799" so i know that is him, but I didn't receive money because he reported that i tried to recover this account and this account got banned.

I didn't even try to recover it but i found out who is he i also told playerauctions in my evidence about it but they kinda don't believe me , so what can i do about it he keeps saying that it was banned because i tried to recover it , but i really wasn't i told them that it makes no sense this account was banned just after playerauctions delivered him account just after 1-2 days, so what can i do

Playerauctions.com support is terrible and it appears I have been scammed. Don't sell an account through playerauctions