Im sorry for you but it's your own problem you have to wait till he accept the trade but you can report him because he sell your account :

!!!
But I think ePVP wont give you his IP adress because you don't trade above epvp
But it's helpfull for other traders that you warn us from him
DON'T FORGET TO REPORT HE SELL YOUR ACCOUNT !!!
Couldn't you start a complaint with Z8-Support !? Tell them he hacked your account