Victim: | steamname: Matsimoko | steamID32: STEAM_0:1:170522 | steamID64: http://steamcommunity.com/profiles/76561197960606773 | customURL:...
Call the local police with evidence and ask how to proceed. Fraud should be a punishable crime unless you live in some backwoods with no law at all.
I have no idea why fake middleman's information doesn't show his nickname, but here's one with the fake nick just in case: | steamname: Leon...
Also, just for clarification: nothing was traded because this has to be like the worst try at scamming ever.
Separate names with a comma.