My car damaged during installation.

Cartrack installed a device in my car on the 26 of August 2021 at Polokwane branch. The technician who worked on my car was Lesiba Madiba. The same night after installation my dashboard was falling apart and some parts were broken. I called the branch the following morning and the branch manager told me he will book my car for the repair. I went to the branch several times and my car is still not fixed. I want Cartrack to fix my car and I want them to cancel my contract . I am so disappointed .