So in being harass and threating byy a seller on here

The seller is threatening me and stole my keys to my car I refuse to bring it back. Now he's threatening trying to either kill me shoot me oh whatever. And I don't take that too highly. About a a mutt from him but in the end like I said it's a good dog all I asked was for him to give me my keys back and he said in blood what do you guys think I should do