Bad network from rain

I got my sim card in November 2020 and im on the 4G unlumited wifi, what a horrible network. I had to buy MTN data whuch costed me R600 48 GB meanwhile i have rain that i also paid at the end of the month, i thought the network will get better but its getting worse each day. I will only be paying fir something that i didnt use again this month, im definately going to cancel because its no use for me. What a night mare. MTN and Vodacom are very expensive but very reliable, i work from home and need data a lot. Their custoer service consultants just kept sending me same settinhs, what a *******..