I'd beat the crap out of the guy that sold me the guitar, assuming it's a 4'9'' skinny guy that weight 90 pounds all wet.
All jokes aside, I'd be really pissed but I would still turn in the guitar. REALLY
I know some may not beleive it but that's what I would do. But you better believe I would get the guy that stoled it and turn him in. I can't stand theif...