Luxury price, not a luxury experience

I bought a brand new Audi Q5 at the end of last year after failing to get my Q7 fixed by Audi Bryanston for over 6 months. I drove the car out of the dealership and the communication system malfunctioned, I have taken video, returned the car to Audi Bryanston 5 times - over December that had the car for a month - the centre console continues to malfunction going dark and leaving me without park assist. I have escalated to the Dealer Principal and the service manager. I only get feedback when I ask for it and now they are telling me that they want to replace yet another part - honestly - I reported the fault immediately as I was sitting on the dealership apron with the sales person - brought the car in to show them within 2 days of purchase and subsequent times thereafter. all I get is the run around, 10 day waiting periods while they communicate with Audi SA and a complete lack of ownership from the DP! I have no enjoyment of my new car, in fact I don't trust it and that not great as a woman driving the roads of SA. This car is clearly a dud, I have given more than adequate opportunity to repair and now I want a refund or replacement.