Report his PM's and block. If he posts too much feedback, ask Theymos to remove them. He may or may not.
He is Untrusted and bright red, his feedback means nothing.
He does not show as bright red to me.
I believe that only happens when a DT member (level 1 or 2) gives him negative trust.
This would warn others not to fall for these
conniving ways that he strives towards requesting in so many threads (using multiple accounts as you have witnessed and have been a part of with that one from Amexsaleserve).