MTN Coverage Terrible

I have complained to MTN thrice now about the coverage in my area, Tongaat KZN. There has been no response. When I called the second time they said that they are working on a temporary solution but there is just no feedback for weeks and weeks. My coverage changes every minute from H+ to 3G to 4G to Edge and the cycle repeats. I'm SICK of it. I have TWO MTN contracts valued at over a R1000 together and I have rotten reception like that. But that's not the worst thing. The worst thing is that the speeds on 4G aren't even 4G speeds. It shows 4G signal but nowhere close to 4G speeds. On the coverage map my area shows LTE coverage. But nothing in reality. MTN please fix this issue. Data speeds are very important to me because of my demanding nature of work. Im on the brink of cancelling all my ****** contracts and moving over to Telkom mobile.