Pathetic Service from Netstar

I have been with Netstar for more than 3 years and they have never corresponded with me about the status of the tracking unit that was installed in my vehicle. I told that after 3 years i would need to upgrade. I understood that as part of their T&Cs. I contacted Netstar at the beginning of the year to check on the process to upgrade and was asked to call back in April when my contract ends. I did that and requested to know if my unit was working. I was told they they will send me a certificate stating my unit is active and updating on a regular basis. Up till now i have received nothing. I call again this week and spoke to a Donald who could not assist me with whether the unit is working or not. I was then transferred to Sean Abrahams a supervisor who could only confirm via email that my unit is not working but can not tell me when was the last time the unit updated. So I have been paying for all these years under the impression that i have a working unit and my safety of my family is in good hands should something happen my car would be tracked. Sean advised that my contract stated i need to call every six months to check on the status of the unit so i asked for that contract to be sent to me highlighting that statement but that as well has not been sent to me. I asked to speak to someone higher but the manager by the name of Pamela Moonsamy was not available so he would email her to call me back. Still havent received a call as yet from her or anyone at Netstar regarding this issue but im still paying a premium for a non existant service. We live in such peril times yet the company I engaged to protect my interests gives a dont care attitude about its customers. The service is utterly disgusting from call centre to management. If someone at Netstar ever reads hopefully it will pull on the strings of your heart to assist me in resolving this matter. If not please refund me all of my premiums that was paid to you.