Declined 76561198003730535 (Killer Crab)

Victim:
|steamID: NightWalker
|steamID32: STEAM_0:1:44896251
|steamID64: http://steamcommunity.com/profiles/76561198050058231
|customURL:
|steamrepURL: http://steamrep.com/profiles/76561198050058231?t=1352126224

Scammer:
|steamID: Killer Crab
|steamID32: STEAM_0:1:21732403
|steamID64: http://steamcommunity.com/profiles/76561198003730535
|customURL:
|steamrepURL: http://steamrep.com/profiles/76561198003730535

Proof:
I can not upload file!! I have a few pictures as proof..

Description:
Basically he (Killer Crab) impersonate this person:
|steamID: elCaminaTor*BANG*BANG*
|steamID32: STEAM_0:0:30611582
|steamID64: http://steamcommunity.com/profiles/76561198021488892
|customURL: http://steamcommunity.com/id/elCaminaTor
|steamrepURL: http://steamrep.com/profiles/76561198021488892

he took my game (The Walking Dead) and gave me invalid key for Borderlands 2!
after that his name is still in my friend list as elCaminaTor*BANG*BANG*
but when I go to the profile, it will go to Killer Crab profile now..
before this, it went to elcamina profile..
In my friend list, it says that he is still online as elCamina but no respond at all..
When I try to add/talk/etc to the Killer crab profile, I cant, seems that he blocks me now..


Can you somehow get my game back?
I got it during last sale and now its gone!
Please help me. Thanks.

Can upload now.

Pic 1 is Chat 1
Pic 2 is Chat 2
Pic 3 is Killer's crab profile and my friend list.. (Killer crab still shows as elCamina there)

We do apoligize for having taken so long to get to your report as we have been rather busy.

Could you please add a screenshot of your trading history showing the game being traded to the scammer in question?

Archiving report - No additional feedback from the victim.