bad service

I am not happy with Car track service since last week I requested for re-installation of the device, they told me someone will call me to schedule the appointment with me NO CALL NO EMAIL nothing every time you call they put you through Schedule Department no one answer the phone or they drop the call. I've been with them for 5 years they debit me R750.00 for all cars.

I'm very disappointed with their service, I'm going to cancel every contract I have with them. I spoke to Precious from Cartrack she sent them email to assist me but still nothing happened how long do we have to wait ? to get help ??