Sorry you got robbed. The situation weighs down the entire market as consumers become increasingly apprehensive. I suggest that you use your energy and resources to round up other victims, then.....
The U.S. Secret Service is responsible for investigating interstate mail and now electronic fraud. Give 'em a call. They're pretty good at what they do--especially when a pattern of fraud is evident, as opposed to an isolated incident.
http://www.secretservice.gov/investigations.shtml