Tower issue in our area with LTE

I have a LTE router at home and 2 additonal cell devices. I logged and issue with signal at home as the LTE speeds went from around 40Mbps to 2Mbps and loosing connection randomly as well. The first issue was logged 29/4/2019 ref ********** 6. I received a call from Telkom a few days later while I was at work saying that the issue bas been resolved. I told them that I can't verify as I'm at work. I logged another call on 5/5/2019 ref ********** 0. Today 18/5/2019 nothing has been done yet I'm still expected to pay the full installment. Urgently contact me to get the issue with the tower resolved and regarding compensation for the days it took to resolve. ********** and ********** 345