1) Report the matter to the authorities: e.g. the local police, or the police where the agent is, or the state attorney general; you may wish to reach out to several different law enforcement agencies.2) You can file a lawsuit seeking the return of your money--that, unfortunately, is the main way to get your money back, since there is no agency which focuses on returning money to victims of fraud (the police and prosecutors may get money back for you as part of prosecuting fraud, but their focus is enforcing the law, not providing compensation).