Cartrack is the worst I ever dealt with

Worst aftersales service in South Africa. After 30 plus calls still no resolution. Your technicians (that installed the unit) cant find it now to de install it and move to another vehicle. Paid the R870 for the move but now want to charge me an extra R600 because you cant find it in my old car that was sold. But I can still see the car on my app. So its still active. I am so sick and tired of speaking to you... whatsapp, email etc etc. And still you just dont care to have a happy customer and to treat customers fair. Easy just to say " cant find it" and then just have me pay ANOTHER R600. I wont!!!!!!!.