Standard Bank changing my account without my consent and charge me service fees for every single transaction..

It's going for six months now..Last year I spend many hours at several branches to try and find out why I pay a service fee every time I swipe my card or withdraw money. Turns out Standard Bank made changes to my Current Account and they can still not tell me why it was changed, who changed it and they obviously do not want to credit me any fees they have taken from my account. Where do we find a Great and Reliable and Trustworthy bank these days.... Many years ago Standard Bank was on top on the charts...