Private Banker Service Issues

When I joined FNB I had a Private Banker that was very good and prompt. Then somebody else took over and the service suddenly became terrible. Last year I was suddenly informed that she resigned, and an interim Private Banker was appointed. I always had a direct number to my Private Banker but suddenly I have to go through several calls and holding on and invariably the call is dropped along the way and I have to start from scratch. And I can never get hold of this person. This is becoming very frustrating and needs urgent attention as I need to resolve some issues with my account!