MTN worst network service ever

Actually they not worth one star. I'm with MTN since cell phones came to South Africa. I requested to migrate my current package to one with more data, previously it was possible now suddenly after I was transferred 15 times the answer is I can't migrate because it will cost more, like R800 for 2G extra. They gave me a data bundle of 500mg for showman. I don't need showman. Can you believe it. I'm on edge of canceling my contract of almost 30 years. Pathetic its all I can say