Who to goto about impersonators?

So i have someone using my twitch alias trying to scam people how do i know this? because one of his victims posted comments on my profile full of rage that i was a filthy scammer and that i most likely scammed my whole inventory etc. and it made me very confused until i realized what was going on and showed the other person that it wasn't me. (he apologized after.)

I already changed my twtich title to "Someone is using my name to scam people watch out"
and edited my profile to say someone is out there trying to scam people using my name and this is my only profile.

but Is there anything else i can do or someone to contact about this?

mayb ask the person who posted the comment on ur profile u give u the link of the person whu scammed him and post tht scammers url here ezy

Already have the scammers SR page since i had find out that guy was yelling scammer at me, his already banned by FoG but would be nice if there's somewhere i can report his impersonating other users so his bs won't bite me.
http://steamrep.com/profiles/76561198133681952

Tagged on SR is about as good as SR can do. It's up to you to make your profile distinct.

Also, not sure why people would trust someone just because they have a twitch channel.

I know, i just wish there was something else i could do, i just logged on youtube to find someone calling me a scammer because of him now.

Trust me best you can do is learn to live with it and make a good copypasta to give to people explaining the situation. I should know better than anyone I get 100-150 comments a week just on my YT accusing me of scamming because of my impersonators.