Cartrack ! Ooh no thanks

I have a contract we cartrack I have being calling in with a system complain on their device four over ten days no response, the supervisors refuse to return calls, the operators who suppose to assist you ask you to refresh the system an wait about and hour. I have a system to track my vehicle for business this tracking system as failed, today Wednesday 3 july a technician was sent to replace the system a signal or frequency test failed so the old system was put back. I am appalled with cartracks service I have instructed them to take their system out of my vehicle I cannot rely on inefficient customer service what are we paying for my business vehicle is not safe with cartrack