Nedbank won't close my account!

I've had my primary account with nedbank for many many years and still have a cheque and credit card with them. Since January 2020, I've requested that my credit card account be closed as I have not used it in a very very long time and I'm not willing to pay any more bank charges to keep it open. I've received one phone call in February 2020 from the credit card division asking me to withdraw my greenbacks so that the account can be closed. This was done in February. It is now April 2020 and I have had many chats on the money app with agents following up on my account closure and nothing has been done. Nedbank is constantly deducting bank charges off that account, I am constantly transferring from the cheque account into the credit card to keep the balance updated however nedbank service is now unacceptable. The agents on the chat line are not to blame but there is simply no movement. I'm so shocked by the way nedbank now assists their clients. All I want is an account to be closed!!!