Tracker installed on Thursday, checke 2 days later and it was faulty

Tracker installed on Thursday, checke 2 days later and it was faulty. They contacted me to say a technician would come after the weekend. Got a text on the same weekend that tracking device is working. Checked this morning and it is not working. Called customer service and they confirmed that it is not working and technician will be dispatched. Horrible service given the risk of driving around in a car with no tracking device even though insurance is under the impression that the car has a tracker.