Did you dispute this charge with your credit card company when you noticed it?

If you didn't, why not?

Usually, you have 60 days to dispute a transaction with the issuer. If you don't, you're usually stuck.

You may yet be able to have him brought up on fraud charges, but you'd have to hurry to an attorney to see if it would even fly. The statue of limitations on fraud is typically 2 years from the discovery of the act.