Why am I still A client?

I need someone at standardbank to call me and explain to me why i must keep my account with them?? the simplest of requests and you get told you must go into the branch to change something as simple as an email address? how does that make sense?? i have a prestige account with a \dedicated"prestige line which do NOTHING for my personal banking experience! nothing!! and when you do go to the branch they phone the exact same ****ing number that i phoned from my desk and do the exact same ****ing thing i requested! why am i still a client???"""