Telkom Charging Money for limited services.

I am paying for a 20Mb/s 2TB LTE to avoid being throttled in speed, All used to work fine and were very happy with the service. But recently the speed varies. One second you would get the 20Mb/s service you are paying for, the next it goes down to 0.11Mb/s and the next to 2.5Mb/s. It never seems to be stable. with the result I constantly have problems connecting to my work servers and other websites. This causes me to come into trouble as I cannot do my work. I logged a call for a callback earlier in the week, where nobody called back. I then logged another request yesterday, once again not getting a call back. Today I called Telkom to log a call. I was informed that the tower I am connecting to was down. This seems to be a bit thin as how is it possible that a tower in a major metropolitan area can be down for so long with nobody attending to it? So I am stuck with limited connectivity, but expected to pay the full price. Something just is not right. Service call ***1 has reverence