Not happy with continued tracking device fault

I had a tracking device installed in my vehicle from Ctrack in April this year.<br> <br> I have continually received phone calls and sms's for severe g-force and severe impact alarms. The vehicle is used by my fiance so I call her everytime to make sure she is okay. This is most inconvenient as it normally happens when I am in a meeting or sleeping due to working nightshift.<br> <br> I had an arrangement with them last week friday to do a reinstall. On Thursday they sms'd me to confirm the appointment which I rep**** to saying I would unfortunately not be able to make it and need to reschedule.<br> <br> Needless to say the following day the technician rocked up at my offices and I wasn't there. He called me and told me Ctrack would call me on Monday to reschedule... Its now Wednesday.<br> <br> The device is not performing as they claim and neither are the staff. In my mind that is breach of contract and they can take their **** out of my car.<br> <br> Pathetic company and pathetic staff is all I can say