76561198028862057

Actually, he's not a scammer.
If you spent a little time actually paying attention, you'd see you traded with an impersonator.
Impersonator -> http://steamcommunity.com/profiles/76561198250904830/
Real guy -> http://steamcommunity.com/profiles/76561198028862057

If you'd had simply went to the steam gift link in the scammer's profile, then used
the steamgift link to the steam community profile, you'd have noticed easy.

Sorry you lost your game.

+rep! great trader!