Sim cards not working in any devices and zero useful support if any provided.

I have two sim cards. I pay for both. One has not worked since 6th October 2020 but emails continue to go back and forth with the most ridiculous suggestions of which I have said I already tried. So we manage with the one for now. Today that one loses signal. Again i have to send an enquiry and stopped working unless hot spotting myself. I am now done being nice and waiting the time to get back to me due to remote working and delays. I am working remotely. My clients don't wait more than 3 hours for a reply. And I handle queries for over 4 million people. Like I am told if you cannot keep up then you are making enough money to get more people to help. So please don't shoot me with that excuse. If my customer pays for something and its not working i fix it. So I am pay R1000 a month for which I have not been able to use half that service for nearly a month. So please fix it.