Report to your local police department. I had purchased a part for a '66 Cadillac years ago and the money order was deposited and I never received the parts. Like you I never got a reply to any attempt to contact. Local Police contacted his local Police and he had a real reputation. Long story short He ended up being charged with inter state fraud and I did eventually get my part..and I had to call the local D.A. since it was part of his "restitution" to either pay me or ship that yes I did receive the part... By the time I got the part though I had sold the car. Ebayed it and made a little profit .....Good Luck