WTF? 3 YEARS LATER you are doing something? After he stopped answering calls the first time is when you should have done something....now if the actions you mentioned with the feds and the local PD were taken 3 years ago when he first ripped you off, then I apologize. If you are just now doing something then I'd say don't hold your breathe. I think the Statute of Limitations on theft is 5 years here in Indiana....not sure what the laws are regarding this...but I think you are screwed.
Where's SCORP???