Was your email confirmed? If so you should be able to get it back pretty easy by messaging AQW support. If you bought anything (ACS, Membership, etc) for your account and you were sent a transaction ID you can get it back nearly instantly as long as you still have the transaction ID here.
Tips while trading. Always use a middle man. Using a MM gives protection while trading and should always be used. Check out this thread for more information. Also, is the person who scammed you from MPGH? Report her/him - Scammer Grave - MPGH - MultiPlayer Game Hacking & Cheats - Hacks, Cheats, Downloads, Trainers, Games