Horrible Service: SMG BWM Umhlanga / Mercedes Umhlanga

We bought a Mercedes CLA 200d from the Umhlanga Branch three months: The car got delivered at Woodmead Auto where we were treated with the most utmost disrespect by one of their Salesman (Naheem) about four times we went and every time it got worse. After collecting the car we drove les than 50kms and the engine light came on and we got instructed by the SMG BWM Umhlanga Salesman (Claude) who we bought the car from to return the car to Woodmead Auto so that they can assist them to sort it out which they failed as after a week the car was still not right. We took the car to Mercedes Bryanston where they gave SMG BMW UMhlanga a quote (which to my surprise Claude asked me not to inform that the car was from their dealership) SMG BMW Umhlanga decided that the quote was too high for them and they would like to tour back the car back to Umhlanga and get their mechanics to look at it and was given surety that the car would be fixed within a week and return to us a per the call we received from Claude (SMG BMW). The car was toured back to Umhlanga SMG BMW and at this point we are in week three and no courtesy car has been offer which we escalated the matter to their DP who was not very much useful to us as she was very dismissal and just wanted to cancel our contract. Don't know who told her that we were interested in cancelling the contract as we bought a car and wanted what we bought from them. They cannot bring back our affected credit score back to what it was and the much inconvenience which we were put through. And we suppose they were taking advantage of that we are in Gauteng and their down in Durban or perhaps that we are black as we don't think should the same behavior would be afforded to white customers. We were given a courtesy for two then taken back as probably black people aren't deserving of being taking of as they are put in that despicable situations and ever since the inconvenience has been on another level as one excuse after another on a weekly basis have been heard from Claude (SMG BMW Umhlanga). We have to chase after him on a weekly basis to get feedback from him as when we don't contact him he doesn't bother as well and the car has supposedly been taken to Mercedes Umhlanga and we are in the month now not having a car plus using Ubers around as we as a black couple are not deserving of their courtesy car. @Merceds are you unable to fix your own car as it has been in your Umhlanga Branch for the longest of time now as per Claude (SMG BMW). Week after week there's a different excuse about you guys wanting to diagnose the car again and again. Clearly Mercedes Umhlanga have no idea what they are doing. We bought your brand knowing very well that it was one of the tried and tested in SA. With what has been happening for the last three months, it relays a different message. We had divert three of our friends to look at other brands as they also saw what has been happening to us when it comes to your brand and going forward this will impact all those that are in our circle that have been looking at your brand differently. We have been more than patient with SHG BMW Umhlanga and their **** Salesman (Claude) who never gives us feedback or follows up to make sure that the car issues are being resolved and return the car back to us. @Merceds clearly the ball is in your court to proof if what you have been selling is quality or just another stunt to sell units