ABSA Private Banking and terrible customer service

I have been banking with ABSA Bank all my life and currently part of the private banking facility. The service from ABSA Private Banking is absolutely atrocious. The bankers do not answer phone calls, messages or even emails. My private banker Monwabisi Ngcezu is just non-responsive and does not respond to any requests. Even the Regional Manager Thato Motake does not answer phone calls. I have lodged a complaint with ABSA bank a week ago and I am still awaiting a response. My suggestion do not sign up an account at ABSA Bank as they no longer have customer service experience or any customer care for their customers.