You Robbers

I advertised my Hyundai Getz on OLX, and the guy called fahim gave me a call saying that he want to buy my car, we had an agreement, afterwards i told them that i dont have papers but since the car is under my name i will pull out the papers, we agreed.. They sold the car, promised me to pay within 7-21 days. Even now i haven't received anything. They keep on promising to give me deposit so that i can use to pull the papers, but no success... I'm just glad that the buyer has involved lawyers on this matter and they also planning to close the business if they dont do good things to customers