When I bought my car from the dealership my ex (still an ex at the time) gave me 5 grand for the down payment. I asked him not to but he was starting to cause a scene and handed the lady the money anyway. He told me he didn't want re-paid. When I told him I wasn't going to be in a relationship with him he became irrate and told me if I didn't sign a contract stating I'd pay him back he was going to find a way to make me lose custody of my child. I signed out of fear. I tried to contact him to pay some money back but couldn't contact him or he was too "busy" to get it. When he was ready to take it I no longer had it and I attempted to talk about a payment plan but what I could afford wasn't enough for him and now he is threatening to take me to court. The vehicle is under my name only and he is with-holding property from me. Do I stand a chance at winning this?