Uber driver

I requested a ride Tuesday morning. Paid for it in cash. Later on on the day I received a email saying I didn't pay for my ride. After several times of trying to contact the driver, got him and he was very rude to me. The matter has not been resolved and I couldn't use my Uber app later because I had an outstanding amount which I had paid. It's not the 1st time such happens, can Uber sort out their drivers. The driver's name is Xholani Licence plate CJ78RWGP