Complain

I have been with cartrack for more than two years now. Around late September early October this year. I phoned them to have the unit tested. Service agent told me the unit was faulty because the car haven't been run for such a long time. The car is at Umtata, in the Eastern Cape, I live in Johannesburg. They will notify the repairs department. I have been back and forth with call centre. Today I phoned many times without solid reasons why still to this very day the unit haven't been fixed. But they continuing debting my account monthly , paying for something which is not working.