Mercedes Benz not adhering to their standards

I've had the worst experience with Mercedes Benz Bedfordview and Sandton Branches. I bought my car in September 2025 and the salesman confirmed that the matrix device is already installed in the car. Up until now I have been paying for a device I have not received so if my gets ****** it can be traced and should I have a problem I cannot press the button or report to anyone. This is serious and critical issue. I have followed up several times and the matter is not taken seriously. And also I had taken my car for a service at Sandton with the issue that I had since I bought the car with a car key battery low issue, tyres showing low pressures all the time and that has not been sorted. Someone followed up and I did mention I was not satisfied about these things, and no one is interested in assisting. I expected better but they are just like the rest needing commission and they throw you like a hot potato afterwards.