Cannot locate my vehicle and want to upsell repairs/repalcement with a new contract

A useless car tracking company which cannot track their own unit. I haven't received battery disconnect alerts/calls in a while over the past few months. My vehicle has gone in for repairs and once again no calls or alert on battery disconnect or low battery. This morning I called to test the unit as its showing the incorrect location since a few days ago and the emergency/test department cannot find the vehicle. Now they say the tracking unit is faulty and it must be booked in for repairs. Why did I not get alerted or called way before when the unit went offline ?? You're failing to do your 1 job which is to track. What would happen if my vehicle got ****** over the last month? You would have hid behind tc and cs and said unit must be tested and proved operational yet you fail to do even that.