Worst tracker company EVER.

I installed a tracker 3 months ago through Mix Telematics. Worst decision ever. From the first day the unit start giving trouble. Each time I lock my car, the alarm goes off. I called Mix Telematics the next day to log a conplaint. I was told the technician will call me. Days went by without a call. I called again to follow up only to be told that the complaint were never logged. I was told again a technician will call me. Days passed again and this time I logged a complaint on Twitter. I got a call a week later and was promised that someone will call me. No one called At this stage 4 weeks had passed so I decided to cancel the debit order as the system was clearly not working. Another month passed and in the mean time I contacted matrix several times, and even went so far as to tell matrix to come and remove the system. 3 weeks ago the system caused my vehicle to cut out and leave me next to the road. I called matrix once again and I was again told that a 3rd party technician will call me. Several days later the technician called me and told me to bring the vehicle in to Midrand for diagnostic tests. I stay in Roodepoort. Now I must take off from work, who is laying of people to fix a problem other people caused. In the mean time MATRIX realized that 2 debit orders failed to go off. Now I am getting SMSes each day instucting me to pay. Why must I pay? Your system is not working and your system is causing problems with my car. Your accounts department also dont call back, and each time I have to call, I get the run around. Come take your **** out of my car please