MTN not giving a damn, *******

I make use of Afrihost for internet connection, and they make use of MTN as tower operator. Everythin went very well from November'24 till about 2 months ago. My download speed went from 75Mbps to 2Mbps. At night I will have arpund 20Mbps and in daytime 2Mbps. The tower is visible from my house, straight line 6km. Afrihost tells me all is fine on their side and that I don't fall in the right zone for data connection, the tower antennas are faced to Groblersbridge border post and not to me. MTN says all is fine on their side, and I have to make peace with that. I have great internet, but not anymore. So why at night is my speed better than in the day? You (MTN) is throttling me to give bandwith to the border post. *******! I pay for a service, that you benefit from, but I can't do anything with it. Your signal strenght for calls are also pathetic! Your tower is located on Farm Rhenosterfontein, Tom Burke, 0621