Useless Tracking Device

I was minding my own business when Cartrack called me and INSISTED that I need a 2nd tracking unit in my car which they call it a "TAG" apparently this is a new advanced unit which is also anti-jamming, all good I agreed and a new unit was installed in my vehicle, on the very same day I realized that that unit was not giving me any details regarding my vehicle location and I immediately called Cartrack to inform them about this and I was told that's how the unit behaves when its new I should give it 24 hours for it to update. Fast forward the following day which was Friday I checked and saw that the unit is now giving me a location however its the wrong location and I thought maybe to give another day, Saturday I checked once again on my app and I saw that it was giving a different location I was in 3 hours ago vs where I was at the time, I then decided to call Cartrack once again to inform them about this and the lady I spoke to did also confirm that she is seeing 2 different locations from the main unit and the tag which is a problem and she said she will flag the unit for me and get someone to call me on Monday to get this sorted. Monday comes and no one from Cartrack calls me, then I the idiot that I am decided to call Cartrack once again(this is not a free call) and spoke to Thabo who said he will get someone to call me he also confirmed that indeed my unit was flagged, still no one calls me until 6pm when I get an email from Sebenzile Mathunjwa telling me that my unit(Tag) was tested and the location is Parktown and with that said all is in order my call will be closed. WHAT? Excuse me? My car was NEVER in Parktown today, I work in Sandton and that's where I was the entire day, had someone actually done their job and tested both units , you have seen that they are giving 2 different locations, maybe if Cartrack gave me a call as promised to confirm where my car is then we wouldn't be here, by the was I was billed for this stupid unit that is not working. So I have tried on my side to get this sorted and clearly I am the only 1 worried about this stupid device working and so I have decided that I no longer want that thing in my car and can Cartrack please arrange to have it removed ASAP, like I said I was minding my own and had no business whatsoever with this stupid tag and you guys decided to call me and involve me now that it's not working I need to be the 1 following up, I am sorry, not gonna happen anymore. The AUDACITY to email with such nonsense, telling me the unit works fine with such confidence and that you are closing my repair call without even engaging with me? Please can I have it REMOVED immediately. I DO NOT WANT IT ANYMORE!!!!