nedbank poor service

i closed my check account on 2017-12-05 at Knysna branch of Nedbank. i deposited the outstanding amount due. my bank cards were destroyed in my presence by the help desk attendant. i received a phone call during February from the bank informing me that the account is in arrears. i went to the bank and spoke to Lisa and Heidi at Knysna branch. i told them i closed the account and i am not willing to pay the arrears because it is a bank mistake that the account is not closed. i received the following e-mail from Knysna Nedbank on 2018-04-03; From: "Nedbank Knysna - Enquiries Consultant 3" ********** To: ********** ********** Cc: Sent: Tue, 3 Apr 2018 at 12:46 Subject: Closure of account dispute Good Day Mrs.R.J Pretorius I have managed to get ahold of the account closure details, like the time and date of when you handed in the documents. This is unfortunately a lengthy process but please be re-assured I am doing everything from my side to get this account closed to be done for this I have get a portfolio of evidence of documents that was submitted. The next step for me will be to logg a request to view branch footage of that time and date that documents was handed in. I thought I will just advise that I am currently still attending to this request. Kindest

i still receive calls from Nedbank to settle this account please sort this problem out