Poor service costing me money

My property has been sold and the bond account has already been closed. When I called Nedbank to confirm that the debit order has been stopped I was told I need to speak to a homeloans expert. Nobody was available and the lady took down my details for a homeloans person to call me back. Of course nobody called me back and last night the debit order went off which is now affecting my cashflow as I am not getting rental back. I need my money back and the debit order stopped immediately please.