Tracker is Useless

My current unit has been offline for 7 days and even after numerous phone calls it still hasn't been resolved. I have made numerous phone calls to tracker and I keep getting told that a technician will contact me to make an appointment to look at the unit and I am still waiting for a technician to call me. I am going to look at my legal options to get the current unit in my vehicle removed and move my business to one of the competitors because clearly tracker doesn't cat about their customers. You have put my business at risk as I am unable to track the whereabouts of my vehicle. You have failed to provide me with the service that you are contractually obligated to provide.