Closing of account not done

I changed banking details last year March already. I went to Absa bank personally spoke there to a consultant, said that I changed banks and want to close my Absa Cheque account, but due to me having an overdraft I ask if I can arrange for them to freeze the account, and I will make monthly payments until the overdraft is paid up. I didn't have any money coming into that account so was a bit behind on payments, but will catch up and ensure that the account gets paid up. I was told all is fine, they will arrange for that. Unfortunately that was never done, so whenever I make payment, it is only for banking costs, and this way I will never be able to pay this account. Further more my account is handed over to attorneys, despite the arrangements made with ABSA directly. I am not available telephonic, all communication needs to be via email. I want to pay off my overdraft, but can't afford to pay large amounts, and cannot continue to just pay banking costs.