That's quite a leap.  You've offered no proof the funds have not been returned BestMixer, or that that Hhampuz sent them to his own personal wallet.  You don't know where the money ended up, and apparently that's by design.  BestMixer hired to Hhampuz to escrow their funds, and even if he still has the funds in his possession, that's not a scam, he's doing what he was hired to do.

This whole thread is based on a lot of speculation and wishful thinking.