Bad customer service at Land Rover Menlyn

I have experiencing poor service at this branch for the past 4 months. I took my car in for service in April and gave them a list of things to check, it took them over a month to get parts they didn’t even give a courtesy car so I had to pay for a rental deposit as they claimed they didn’t have cars for customers( only because I’m a young black woman I was not taken seriously). After I got my car back it now had new issues which were not there when I first took it in, I took it back to them for the 2nd time and they still told me about parts and even though I told them I was not comfortable driving the car in that state they insisted it was safe to do so, I finally got an appointment to bring the car back in for the 3rd to correct what they messed up. My car has been with them since Monday, since yesterday I have been calling to get feedback but the customer consultant never got back to me until today after I called several times, now they still haven’t fixed the problem and they claim it’s something else. Please help as I am frustrated and distraught about the service I’m receiving from them.