As PPP suggested, the first thing to do is to contact the Attorney Generals office in California immediately and give them the info on the guy who ripped you off. You need to find out if he has any pending complaints.
You can make a police report with Bakersfield PD but that may not go anywhere.
Rational people would look at this like a theft. People like the DA's office tend to look at this as a civil matter. They will say you entered into an agreement with the other party and it's up to you to prove the guy is a criminal.
If you have the address then send a 10 day demand letter. You need to cover all your bases regarding this matter.
I know this sounds ridiculous, but again, most DA's are going to regard this as a civil matter and the police more than likely won't get involved.
You have to hope that the AG's office has pending complaints against this guy and then they will definitely pursue criminal charges in this case.
I hope this helps.