Closed account left opporational

Nedbank requested me to close my Pick and Pay account and open a Nedbank cheque account.The new accoint was opened on the 9th June 2015.Old Mutual was informed to deposit my pension into the new accoint.Nedbank was informed on the 9th June 2015 about this arrangement.Other companies with whom I had debit orders were informed about the new account.Some indicated that I will be doubly debited at the end of July 2015.At the end of June the old account was debitted although it was supposed to be closed and had no funds.Nedbank charged me for the unpaid debit orders.I complained about this and the branch manager wrote off some of the charges as it was claimed I was also responsible for their error.I need Nedbank to write all the charges off as it was their fault that my old account was not properly closed.