nedbank incompetence

Over 2 years ago I switched to Capitec and closed my nedbank account. I received no correspondence from nedbank until a few months ago when I received a sms stating that my account was overdrawn. On 06/03/2018 I went to nedbank Bellville to close the account once again. I completed closure forms, paid in R5.00 and thought that was it. This morning I received a phone call from Jackie Sanders from nedbank and was told that my account was again overdrawn and I had to settle the amount within 14 days. After explaining the situation I was told that the system shows the R.00 deposit for account closure but it seems nothing was done to actually close the account and that I have to go to nedbank again to repeat the process. Does nedbank really think I have nothing better to do that waste my time and money to correct their obvious incompetence? What is nedbank going to do about this?