Step 1: file a complaint with your local police. Doubtful they will do much.

Step 2: file a complaint with your state’s Attorney General’s office. They might do something.

Step 3: file a complaint with the Department of Justice. They might get involved, because of the use of interstate commerce.

Step 4: file a complaint with the FBI. They might get involved, because of the number of other people impacted and the use of interstate commerce.

Step 5: if he used the US Post Office for any of this, file a complaint with them.

KEEP FOLLOWING UP WITH #1 thru #5 on the status of your complaints. Usually quarterly.

Step 6: file a complaint with the BBB. And respond to everything he replies with.

Step 7: file a civil lawsuit. One of your first discovery requests will be for all the documents he created in response to items #1 thru #6.

Finally, I am not your attorney, nor providing your with any specific legal advice. Merely the steps I follow when I deal with shady vendors who try and scam me.

Good luck.