i bought a car from a guy that i paid cash for. he didnt have the title he claimed that he had to send off for lost title, i still havent gotten the title from him and now he's saying i never paid for the car. all i have is a noterize paper saying the car was being sold to me for 900.00. i have the regerstration and the keys but he wont let me take the car. what should i do?. im a single mom that didnt have that much money.