Dealership not responding

Hello all, I purchased a vehicle in Texas financed through a credit union. The dealership and bank are in different cities. I signed my part through the bank and they were waiting for dealership to sign and send paperwork. The dealership states they have signed paperwork and the bank said they never received it. Bank has called multiple times to dealership but no answer or follow up was given. When dealership found out they hadnt gotten paid they started calling bank and now they are trying to do the whole process again. But the dealership is again being unresponsive and hasnt sent the new purchase order. I have possession of the vehicle and wasnt aware of this situation for about 2 months. Question is should i keep on trying to get their attention or just keep the car until they try to repo it