TERRIBLE SERVICE

Something that i have come to realize is that there is no aftersales service. I had a fleet management unit installed in my vehicle in Feb 2022 and it worked fine, however I started experiencing starting problems with car and had taken it to a mechanic several times to the extent of buying a new battery and having my alternator tested to make sure all was okay. This all started in march, a month after I had the unit installed. It has now cost me almost R4500 to only find out that the unit installed was defective and drawing excess power direct from my battery and MY CAR WAS IN PERFECT WORKING ORDER. After speaking to a family friend , who is a Cartrack installations, he advised that the unit was malfunctioning, so i called the Cartrack call Centre towards the end of May and to date i am still battling with the various illiterate people that work there that cannot see their unit is not working. I have spoken to many consultants and always get the same reason that they do not have a technician available to fix the problem and i have to pay a call out fee of R600????? If the unit was installed correctly the first time round i would not be having this problem. I have used other tracking devices and must say from product to, delivery and after service was 100 times better than what i have experience in the past few months. CARTRACK SERVICE STINKS AND I ONLY INSTALLED IT DUE TO MY INSURANCE REQUIREMENTS. I WISH I COULD CHANGE IT TO ANOTHER SERVICE PROVIDER. All I need is for them to replace their defective unit to one that is working. Just a point of note, I had spoken to a Katlego who tested the unit and advised that the unit should be showing 12v but on my app and her side it showed 0V for the back up battery. So that says a lot that it is not working. I have tried to speak to a manager but get no joy. IS THER SOMEBODY THERE THAT CAN HELP TO FIX THIS PROBLEM.#$@%$#@