Non Existent Service

We first contacted Netstar in October 2022 to test the tracker of our vehicle, which has two trackers in it. The main one was working, but the backup was not. Netstar said they would have their technician contact us. To date they have not responded. Yesterday we restarted the procedure, the backup one is still not working. They have not come back to us, the service is poor in the extreme. Do they not care about their customers, and why should we pay a month's notice when they fail to respond????