Pathethic Service from Cartrack

I have many vehicles registered with Cartrack. the tracking device is insured and is now not working. I have been requesting for a repair from 2 weeks ago. Emails have been sent from Cartrack Jhb to Car TRack Durban to arrange repair and to date nobody has made an appointment with me. I have called several times and I still get told that emails were sent to Durban. I have reported them on Hello Peter and still have not had any response. If the service is this terrible I do not think I should be held to my contract. I would prefer to move over to another company.