NOBODY TO TALK TO AT BIDVEST BANK

My Business Banker, Joshua Smith, is on leave. Nobody at Bidvest can tell me when he's coming back. I have spent more than 3 hours on the phone trying to speak to a responsibe person in connection with my account, but each one transfers the call to somebody else, alternatively, the call gets cut off. I have sent an email with supporting documents to *** 14.11.2023 and 31.01.2024 but have not received any response. I called the call centre again today only to be told that nobody can assist me until the relationship / business manager on my account comes back from leave.