Poor service at standard bank

I have been a client of Standard bank for 45 years and a Private bank client in Pretoria for approximately 7 years. I have never experienced such poor service and high fees. It is absolutely ridiculous, I was not notified of who my , so called private banker is, and they do not respond to messages left for a call back. Despite complaining and receiving promised of improved service, the have not responded satisfactorily after 3 days! And I am paying a premium.for this service. I advise everyone to rather go to another bank, which can only offer better service at a lower cost.