Nedbank treating me like an ideat

I have an arrangement with Nedbank to say they need to debit my account R3400 on the 31 September 2015 and yesterday I called Nedbank to ask if they can debit my account immediately or if I can make a cash payment but the lady called Itumeleng was not very helpful because she kept on saying if I make the cash deposit they will debit my account regardless of me making the cash payment and if the debit order bounce they will track my account regardless of my cash payment, <br> <br> The way she spoke to me was very unfriendly and I laid a complain with Nedbank complain department which Geoffre Hirst send me a response which I was not satisfied by it because two months back I was told that if I make a cash deposit I should call nedbank to update my account so that they remove the tracker on my account but Goffrey now he is saying its not possible to do that, He said if I make a cash payment the debit order will try to debit my account and if it doesn't find money it will still track my account regardless of my cash payment, <br> <br> This morning an sms saying Nedbank has debited my account R690 Instead of the R3400 that we agreed on<br> <br> CRM REF No: ***