Paying for e premium service I am not getting REF ***1

I have been a loyal customer of Telkom mobile since the 8ta days, since then we progressed and upgraded to a premium LTE package of 100GB + 100GB and I never had an issue with signal/ speed. Since September my LTE became slower and slower to a point were I cannot actually use it, the speed runs between 1-4MBps and the latency is between 100-500 where my speed normally were between 8-30MBps and latency less than 80. I got the LTE package from Telkom as it was fast and efficient and advisable for gaming, but I cannot utilize it for gaming purposes as it is far to slow and even browsing the web and using Youtube is a horrid mess. I spoke to Xolisa at the call centre and the said a Technician will be in touch with me and will come out to resolve the issue with and LTE roof antenna. I have not yet received any feedback from Telkom, it is utterly unacceptable as a pay a premium price for a premium service that I am not receiving.