I hate impersonators, sorry you have to deal with one at the moment. Hopefully those that got scammed will take their -rep off once you can get a hold of them.
What I did to keep an impersonator confused and unable to trick new traders was I kept changing my steam profile image and syncing it with steamgifts, so it will update on here as well. One was so persistent, he had to keep changing his to keep up with me. He eventually gave up.
Steam Support doesn't do anything about any but the most notorious scammers. I suggest going to SteamRep if you haven't already.
Nonetheless I reported as well.
This impersonator is already a certified steamrep scammer, but nevertheless I've reported him on steam as well.
After 2 years, my impersonator report on SteamRep has "Evidence Provided" and that's it. They work really really slowly :/
And this -rep is really going on my nerve
Today I had experienced another impersonator of yours, attempts to impersonate another user.
After his failed attempt, he proceed to impersonate you.
This guy attempted to trade with me today using Paysafe. Good thing I didn't push through with the deal.
He links steamgifts trade URL, but the Steam profile link doesn't match his profile.
Then I proceed to troll with him with my used keys.
Impostor impersonator and scammer.
http://steamcommunity.com/id/Hacker19153426
Don't trader with them.