Bad service and leak of Customer service.

I recently bought a car from this dealership, the owner has an attitude, he doesn't want to listen to what the paying customers are saying, when I signed my contract I stated that I needed the a full tank in the car, he only poured half tank and he didn't want to listen to me when I asked why did he pour half tank because its for the second weekend driving from Pretoria to Johannesburg and I'm not using a free transport, I'm using my own car which I poured petrol to drive to Johannesburg for two weekends in a row. so when you buy your car from this dealership make sure that you check everything in the car before you sign the contract.