Just a tip for next time. If you are buying more than 1 card, ask him to send 4 CoD items and accept the CoD for only 1 card at a time and wait for the nx code.
At least if you get scammed, it will be only for 1/4 of the amount.
Though, it's pretty lame to steal money this way. This guys deserves to get spammed/hacked.
Being on a hack site and stealing instead of using the hacks is pretty low.