I could need a help :I

Report user on Steam, provide the proof you found, cross fingers scammer gets punished.

Your best bet would be to report that user on Steam (proof is a plus).

I'm just glad that you didn't fall for their trap.:)

The problem is. What kind of proof? Names? Screens? Videos?

So, I have a similar problem here. I find many scammers in steamgifts, but I don't know how to report them, since I'm not the one that have been scammed (it's a similar problem because I also didn't get scammed, but others did). Anyway, if you have a photo of the chat and the 2 steam profiles, that should be enough.

Sounds like one of these jokers...

It's always worth reporting scammers to Steam. You probably won't get stuff back if you have been scammed - Steam support has pretty much washed it's hands of that. But hopefully they will get trade banned on Steam, especially if they are impersonating a 'Steam administrator'.

It's also worth reporting to steamrep.com (and checking that site before making any trades) - although sadly the scammers will likely already have any number of alt accounts to switch to.

Beyond that, take screenshots and make sure you are reporting the unique Steam ID rather than the username which isn't unique and can be be changed.