Netstar tracker device installation

In June 2025 I was ******* into taking a new contract with Netstar which I didn't mind then because they had been good to me. I was told my device was faulty and needed to be fixed/replaced at no extra cost, when actually my 3 years contract had lapsed and an appointment for a technician was made to come and replace the old device. The day of the appointment come and waited the whole day for the technician but unfortunately he did not come, nor was I contacted to be informed what could have been a problem until I made a call to find out what happened. I was told the technician tried contacting me but couldn't get hold of me but surprisingly I did not receive any missed call that day hence I knew I was expecting the technician and ensured that my phone was nearby and took all calls. I asked to be rebooked and gave them an alternative number just in case they couldn't get hold of me, the appointment date come and still no technician nor was I called again to be informed what went wrong. I called again enquiriying what happened and same story was given that they couldn't d get hold of me and when I asked if they tried the alternative number, they said no. I made another appointment but still the technician did not pitch up nor was I contacted to inform me what happened and that is now three month without a device in my car. I called to enquire and I had been told three different stories by contact agents, I requested to speak to the manager and I got Mpho who promised to get back to me as they were prioritizing my issue as an emergency, after few hours not receiving the call back from Mpho I called again and he said he was attending to it however till today Mpho have not called me back and it's been 3 months goitlng to four months with no device and should anything happen to my car, I will expect Netstar to pay for it because I've tried talking to them and unfortunately it looks like they're not bothered by my case.