Poor Service - Why do you install faulty tracking units!!!

On the 11th March 2022, I processed an upgrade tracking on 2 of my vehicles. This was prompted by my discovery when testing one tracking was not working properly. Netstat had been debiting be for a unit which was not functional for a period of time which is cannot even be sure of since I only discovered when I tested the unit. This is very ********* and unfair business practices. This was however not the end of my frustration, from the 11th of March 2022, it took weeks of continual phone calls for Netstar to schedule the installations. They finally sent a technician on 26 March 2022 to do the installations. More problems awaited me because 1 unit installed was totally dead and not working at all, the unit did not track the vehicle, did not even appear on the myNetstar App, I had to fight with them for 4 working days for them to eventually send a technician to come and rectify the issue. The technician came yesterday (1 April 2022), he replaced the tracking unit with a new one, and guess what the new one is not working either, it does not arm, it appears on the myNetstar App but giving wrong locations of the vehicle, does not show trips undertaken. It is the 2nd of April 2022 and I am still battling with their call centre to fix this issue. What is the point of installing a tracking unit which does not arm and which shows incorrect locations?, it defeats the whole purpose of using their non-existent service, very disappointing! I have called more than 10 times since the 11th March 2022 with no resolution of this problem.