Just a friendly advise here sakiv... You've most probably lost your money and you won't get it back. Now it would be time to continue working with clients who actually pay (and yeah remember to take at least 50% payment upfront). Don't waste your time with that scammer anymore because you're letting him affect your business more and more. On top of that 100$ you've lost even more by taking time to hunt him down and search him on the forums etc. You should just continue working and forget about this shit!