ABSOLUTE NIGHTMARE

I had an entertainment unit installed in my vehicle on purchase in 2013. The unit has been extremely faulty, to say the least. In 3 years: the navigation stopped working, the camera fitting rusted and stained the paint on the vehicle and the reverse camera stopped working. On top of all that, the technicians who fixed the issues each time 1) broke the clips on the dash, and 2) replaced my memory card with one that is not the original. Now the new fitting is rusting again and the navigation has again stopped working. I have been trying to sort out my navigation now for over 3 months. Apparently, I need to purchase a new memory card containing the new navigation software. This was not the case previously. The lady who I am dealing with, Premi, has been less than helpful; unable to make anything happen timeously nor is she able to give me a solid response to anything. Nothing has even been mentioned about the rusted fitting or the broken clips in the dash yet. If I had known that the quality and service I would be getting from this supplier was going to be this bad, I would honestly have preferred to just leave the standard stereo that came with the vehicle in. Really, really poor