Telkom's total disregard for their customers.

I have my main internet connection through Telkom via a Wimax router. On Wednesday 11 April 2018 the connection was broken. I lodge a fault with Telkom on Thursday 12 April. During the weekend I received sms's that they are working on my fault. On Monday I recieved a sms telling met that my fault report was restored. I contacted Telkom to find out what was going on, because the internet was still down. I was told that because they are going to phase out the Wimax connections and replace it with a solid telephone line, they will not repair my internet connection. I asked that a supervisor/manager should contact me. When I tried to phone again as 16:50 this afternoon the office was closed, the supervisor/manager has not phoned me and I now have to wait until tomorrow morning to contact them again. The person I spoke to could not tell me when they will replace the Wimax connection with the solid line or what the cost will be. I would presume that I will have to change my prepaid landline to a contract line now, which I would prefer not to do because it will involve extra cost that I would like to avoid. I also do not know if I will be able to use a WiFi connection, because I originally had the Wimax installed 10+ years ago because then the area where I live was described as a black hole for WiFi.