Cartrack - Maintenance of cost of THEIR unit.

Do not use cartrack. Paying my premiums every month to get a call regarding adding a R30 for unit maintenance. Firstly I paid R328 for the annual increase to go to R428. Then after paying for a year I am told a faulty unit would need a technician call out which I would be liable for?? I asked what would constitute a faulty unit...a camera being accidentally knocked off position. Now I have to pay R2600 for contract cancelation fee, which I will pay because that's the cost of doing business with them. There are many car track companies, take your time, do the research.