Nissan Motus Centurion bad service

On 24/06/2024 I bought Nissan Magnite Vin: MDHFBADD0Z*** Engen No: HRA***C at Nissan Motus Centurion from Emmy at used cars. The car had a stabilising bar problem that caused it to shake uncontrollably when turning it to the left or right in the mornings only. I took it back and it was adjusted according to the lady who assisted me, the problem recurred and on 14/08/2024 the problem recurred and I took it back where Wissie (the manager called me on 19/08/2024 telling me Nissan has to order a part that will take 13 to 21 days. I called Emmy to tell her that I am requesting the report in writing and Wissie refused to give me that. I further requested a courtesy car and Emmy told me that her manager refused. I told Emmy that it is because I am a black lady who does not deserve a good service from their dealership, she denied that. Later that afternoon 19/08/2024 I went to Nissan to fetch my car and still Wissie refused to give me a written report of what was wrong with my car, what part or part number has to be fitted and further said it is not life threatening after I asked what if something goes wrong and who is going to be liable. Wissie insisted that I take my car as nothing would happen. The service I got from Nissan Motus it is distasteful and as a woman I feel cheated and my safety compromised as I am expected to drive a faulty car which I was told that it is not life threatening by Wissie. My life has to be threatened for me to be taken seriously. Wissie failed to represent Nissan in a way that one would have confidence in their service. I am asking for a coutesy car while my car awaits the part that needs to be fitted. I am requesting a full written report as to what is wrong with my car and what part needs to be ordered and when will it be fitted. Otherwise I do not want anything to do with Nissan anymore.

Thank you