The worst service ever

Mtn is the worst network I've ever had to deal with. Y'alls customer care doesn't know how to solve problems, worst you get into the shop and it's the same they tell you your issue is resolved and nothing is resolved. I've had an issue twice already with yall. Even worse my address on my statement is completely wrong. How is it wrong when I provided my proof of address and signed for it when y'all delivered!!!!