A week ago my father went to Goodyear for some repairs on his van. He found three tires for my car for cheap and gave them to me as a gift. They were put on my car at Goodyear.They called today saying they want the tires back because they are worth more and want more money or they will tow my car to get the tires back. Can they legally take my car? We paid what they asked for and have receipts. Also the car is in my name and belongs to me not my father. While my father is in their system I'm not. Should I be worried? Or are they trying to harass me into paying more money?