My girlfriend's cousin's boyfriend was offering to sell us his car for 1,000 with a payment of 150$ at the end of each month. We made each payment on time and this month was our last payment. We contacted him to make the last payment - no response. He contacted us today with threats to bring the car back and that he wants 2,000 now. We called the sheriff and filed a civil suit, than were being harrassed by him. Followed by death threats. I'm not sure what to do and am scared for my familys saftey. I've contacted the police and they said they can't help us. We want to exchange the car so I get my 850$ back that I paid in for. but he refuses. He's wanted for felonies in other states, is a drug dealer, and has unregistered weapons..i hve video recording of our conversation and text messages.