No hope for cartrack no empathy toward their clients

I am so frustrated with cartack and in the process of changing my fleet to track due to cartack inability to assist me as a client So early in the year I went to the the offices in Belville to complain my devices is not giving me the normal alarm and messages as before they promised me they will activate and would be working Then I had my vehicles at a workshop and they disconnected my battery,never did I get a call from cartack to inform me of battery tamper or loss of power. I leave it and carry on as I can still view my vehicles on the app,so few months ago another vehicle go to the workshop and is dead for 21 days also no call from cartack to check if all is in oder Then I have them a call and I was send back and forth for an hour ony phone expense to get to the bottom of this I was told an manager will get back to me. Till today no manager get back to me. Then I received a call from cartack for an technician to come an have a look at my devices now my next challenge is the technician can only on that Saturday or else I need to wait for sometime in the new week as there are limited technicians available, that was weird to me as a client if cartack is aware of me faulty device but yet prolong it further and not priorities it as urgent. So today the technician came out this morning and informed me he has replaced the unit and then he left. Then two hours later I check my ap and see my device is showing it's still at ho.e however I the car is not there so I called cartack and informed them of my situation and they tell me they will reboot the device then I must call them to confirm if it's working. My question then was why must I call to confirm why can cartack not come back to me as a client to confirm I that the device is working or not 30 minutes later she agreed Now they call me back and say we need to send the technician out again and you might be liable for a call out fee of R600.00 due to my device not having lifetime warranty. So now I must wait for 24hours until they fix the problem in the meantime my fleet is driving the rest of the day through the night and I'm blind as I cannot see it on the app. Worst service ever I don't think anyone can beat cartack. To think i have been paying for tracking devices in my fleet and it's not been working the whole time. I'm definitely changing my service provider.