UNHAPPY CUSTOMER

This is the worst service, I am currently out of the country and I called in to change my cellphone number for the notification spoke to lady named Mpumi she advised that i cant change my number over the phone and the is nothing else that can be done. What ****ed me off is that Mpumi couldnt even get more information about dealing with this situation. I cannot go to the branch I am not in the currently not in the country I cannot see the transaction /debit order thats happening in my account unless I check my bank statement which is I do but I hardly do it. CAPETIC YOU NEED TO UPGRADE YOUR SERVICE OR DO SOMETHING ABOUT THIS BECAUSE OBVIOUSLY I AM NOT THE ONLY CUSTOMER WHO HAS COMPLAIN ABOUT THIS.....and To Mpumi being silent on the phone is really RUDE SISI