Bank Charges Continues after account closed

Closing of Business Account: Made an appointment with the Business Account Manager at Cape gate Branch on 07-12-2018 at 11h00 to close the account. I was required to settle the balance which was -656.94. This amount was settled at 11h54 as recorded on the bank statement. Since then bank charges continued to accumulate and today the account is overdrawn by -R682.07. Received sms requiring payment by 11-01-2019. As the account was already confirmed to be closed on 07-12-2018, kindly reverse the bank charges and reinstate the zero balance as at 07-12-2018