I'm no GA lawyer, so I'm partially guessing from experience here, but, short of going over there with a ball bat, your best bet may be to file for small claims pro se - the sooner the better while his company is still on the Secretary of State's active list. Once a corporate presence is gone, he no longer has to pay anyone anything. I can't count how many times I've been burned this way. The worst was for $12,000 by a guy who still has a luxury 2nd house on the Hudson river. (Would have liked to 'modify' said house with a 5' chain saw, but thought better of it) The system is designed to often allow deadbeats a free ride.
On a more positive note, (and I know you already tried this) a guy tried to burn me for a $600 dollar bad check, and upon contacting the local police in his town, an officer hunted him down and made him pay. First time that's ever happened. Every other time the police couldn't or wouldn't participate.
