You should post in Scam accusations to stop him from scamming others. The account still shows positive trust and your BTC have moved since you sent them to him.
I hate to see this happen, because I've done business with petahasher several times with no issues. If this issue hasn't been resolved by now, Raja_MBZ really does need to open up a formal scam accusation thread instead of discussing it here.
Hopefully this doesn't turn out to be a scam by petahasher--but stick around bitcointalk long enough and you'll see reputable members go rogue. Again, I'm hoping that's not the case here.