Alt. attemped to scam me

Link to scammer's Sythe profile: http://sythe.org/member.php?u=353471
Briefly explain the trade: He was selling 50M @ 0.40/m. I asked to buy 15M which he was okay with. He wants me to go first. Since I don't trust him at all cause of his twc, I ask if we could use a middleman. He stops responding and eventually logs off.
Proof that you were not talking to an impostor: http://prntscr.com/gxgko
Screenshot: http://prntscr.com/gxf1y

Since he already has a twc for doing the exact same thing before, I think he should get banned..

 

It's really bannable, but I will post this on his TwC appeal to make sure he doesn't get rid off it that easily.