worst service

Worst service ever! Tracking device fitted in January and was working fine until march. The device stopped working at end of April. When I phoned them .first off all no answer. I then took the option where you report ****** vehicle and still no answer! eventually got hold of them and they said the device is not working because my vehicle wasn't driving during lockdown so the device battery goes dead. They said as soon as they are allowed to go out on calls they will fix the device. First off all I'm still paying for something I cant use! technician came out to fix the unit in August, Then only worked for one day. I then reported it again and they came out on the 29th of September to replace the device. A new unit was put in and still not working. Phoned them again and they said that there is something wrong on their system and that it should be up and running the next day. Today is the 7th of October and my unit still not working. Again phoned them and they said it needs a firmware update!! on a new unit that was just installed?????? Getting fed up now because I'm paying for something that's not working!!!!!!!