MTN service below sub par

I am seriously over it. My 5G home internet became unstable more than two weeks ago, dropping down to no internet for a couple seconds every couple minutes. As someone who requires the internet to be stable for my career, and can lose my job over this, I am not happy. I have called MTN almost daily to ask for feedback and assistance, and so far have a ticket for fixing the tower, a ref number ticket, and three more tickets they logged, and still am getting almost no service except for excuses and promises to call me back, which never happen. I have been told three times that a manager would call back, I have been given ETA's that were not met, and promises for people to come look at the problem. At this point, I am paying for a service I am not getting, and having to use other people's internet in order to work. What even is the point of paying for internet with MTN if they don't even provide it.