Bad service and misleading sales pitch

I recently joined car not even a month and that has been the worst decision I’ve ever made, when they want your business they very quick to call but when when you have issues no one gets back to you even after they promise to follow up and give you feedback. Now I’m having debit orders running on my account of different amounts than have been mandated for. 1. Why do you send debit order mandates if you know you will be debiting your own amounts and without explanations. 2. I was told if my battery is disconnected or the get issues someone will call me but nothing so if you in trouble forget the will not be any phone calls until you phone them, m device has been offline for over a week and no one has contacted me and shows it’s still in a different area than where the car is. 3. Clearly the installers are not fully capable to execute the job at hand if within a week the devices installed stopped working within a week only find it was loose connections “wow”. I just want to cancel and get a different service provider for my fleet