Few things having dealt with scammers across state lines
#1 Immediately file a claim with their state AG's office. This opens up a state level claim. most state AG offices are pretty good about this. Try this to start with, just a 5 second google search
http://www.state.nj.us/oag/ca/ocp/ocpform2.htm
#2 If you paid with a debit card but charged it as "credit" ie you put your card info in, selected that it was a mastercard or visa, you are afforded the same protections as a credit card.