Cheque Account Fees Drama

I have a serious problem with Standard Bank and I am not sure how to solve it. In 2018 I had a black cheque account with Standard Bank which I used for a couple of months until I requested to my personal banker to have it closed. She asked my why I wanted to close the account and I told her and still did not change my mind about closing the account. She did not do as requested and my account was never closed. My account has over time incurred a lot of charges due it not being closed and my account handed over to Nimble Group. When I try to contact the Nimble Group via email they do not respond, when I try to call them my calls are never answered by a live person. I do not think that I should be made to pay such ridiculous fees just because someone did not do their job as my personal banker, that is unfair. I do still have the emails we were corresponding with each other when I asked for my account to be closed before my account stacked up so many charges and fees so I want Standard Bank to fix this and clear my name.