Pathetic after sales service

I purchased an Audi A3 from Jeep centurion, The vehicle had faults to which the sales agent Ronnie advised will be fixed. I had to take the vehicle there 3 times and still it is not fixed. I send them emails and get no response. Yet I am driving around with a vehicle that is faulty and defective. The sun visor clip was broken by someone at the dealer and I was told a new one will be ordered - this was 3 weeks ago. I contacted Audi which is next door to Jeep and they advised me they had it in stock and Jeep has never ordered one, My windscreen is being scratched by the wiper blades and the roof is still scratched. I informed the DP that the car has a slight shudder and he advised me he will inform me in the morning, This was also 3 weeks ago. It is sad as I purchased 2 vehicles from Jeep in the last 2 months. The after sales experience is shocking and terrible. Ronnie Khumalo is a **** and ***********. he is also rude and makes promises that he cannot keep.