Not the service I expected from a "reputable" company

I thought it would be a good idea to install a Cartrack unit for peace of mind and especially around this time of year. The unit was installed and the App downloaded to my phone. This was done less than a month ago. The App worked for a couple of days and the it stopped working. I phoned Cartrack who rebooted the unit and said I must drive 5 km, give it an hour and check the App. This was done, and it still did not work. A technician was sent out and the unit was replaced. Everything was fine for a couple of days an then the same happened again. I phoned, was told that they will reboot the unit, I must then drrive 5 km and check after an hour. If it does not update I must phone back and they will book a maintenance call. It did not work. I phoned and after being transferred to the Fleet Management Dept. was cut off after holding for a while. I phoned again and was cut off again. I then sent an email and received a ticked [Ticket#***] New ticket has been created. This was done on 22 Dec and to date 29 Dec no one has contacted me. This is the typical service that we as South Africans have come accustomed to which is pathetic. I don't expect them to jump over the moon or move mountains, I just expect to receive the service and support I pay for.