worst service received

I have only been with them a few months now and totally regret my decision to join them. The call centre staff is unfriendly and uninformed and always looking to pass the buck, they put in a tracker and when i noticed almost 2 weeks later its not tracking my car, they have no haste in replacing their faulty ****. So i have a tracker thats not working for almost 3 weeks and they dont have a care in the world. I was told I must check up with them everynow and then to check if the tracker is working then what am i paying them for. I had a booking to replace the tracker, then 2 days before the appointment I was told, they have to reschedule...The glowing reviews on Facebook makes me wonder if they not writing that **** themselves cos service is not what im experiencing