MTN Pathetic Reception and Service

From about August 2021, I have had continuous reception problems with MTN. The reception cuts out literally every 30 seconds, that is on voice services. Data is a major problem, 99% of the time, I only have access to Edge, if I am lucky 3G. LTE? What is that????? As with the voice, the reception cuts in an out constantly - I can literally sit and watch the top of my phone where it shows the reception and see it come and go multiple times a minute. I have an MTN business contract - how I am supposed to conduct business in this manner, I do not know. I have contacted MTN customer service to which there answer was that they don't know what the problem is, I have been into the branch (no help), I have contacted ICASA. On contacting ICASA, MTN responded saying that would put in a signal booster at my house - the paperwork has been completed and sent to them.......still awaiting a response. In the Barberton/Nelspruit/White River region I have so little reception that I can hardly function. Two weeks ago I traveled to Sandton in Gauteng - needless to say, I have no reception there either so the signal booster is really not going to assist if a large business district like Sandton has no reception. I have even changed devices, which also doesn't help. So MTN what exactly is the problem???? Months of inquiries to no avail - I am at my absolute wits end! You are very quick to take my debit order every month, yet I do not receive the service for which I paid?!