Netstar - problems with responsiveness and to talk to them

I am phoning Netstar for the last two days and their phone number is just putting the customer on hold. They have a whats-up line that takes 24 hours to respond - no response to my message either. I also asked on the website that they phone me and it is 36 hours now without any phone call. They answered me through e-mail this morning after sending a mail message also to the cs (customer service) yesterday but now it all dead again. Now they tell me to please phone them - "really". How can you trust a company to track your vehicle if you can never talk to them. I am buying a new car and need information on the current tracker - it is very simple. I suspect I am going to be charged R1000's to cancel my contract that was originally taken out in 2018 but updated recently. Who knows - I cannot get any information from them efficiently.