Zero accountability and customer service

I had a Skytrax unit that was in a car when I bought it, Tracker offered me an option to take over the contract which I accepted. Less than one year after I have taken this up, the device stopped working. First problem is that Tracker did not contact me to inform me that the device stopped working, this is the Skytrax unit which should be monitored constantly. I called the call centre 3 days after this stopped working and they conceded that they were supposed to contact me but had not reason why did not. I was kept on hold speaking to various people for over 20 minutes when eventually they promised to have a fitment center contact me within 72 hours to arrange for a technician to come inspect this device and fix it up. 4 days after this, no one contacted me from Tracker, when I called back and spoke to the same manager, Clifford, from tracker - his excuse was that there are different departments and there is no single person who will care to have all the problems resolved. This is how Tracker is set up, so basically deal with it, no one person will be able to call me and help resolving the issues I face with the warranty and the device itself. No one from tracker calls the customer back and the call center seems to have a modus operandi to have their customers wait for 20 minutes on the call before they even log a Service Request which does not get attended to in any case.