Bad service cartrack

They I installed a device in my vehicle in 2014 , I had no problem until May2021. I called their offices to locate my vehicle and no one could assist me in picking up a signal and that is their service to me. To and fro and with different people and not getting any assistance I finally cancelled. Just to think my car could of been ****** in this process as to date they cannot tell me why they could not pick up a signal.