Debit date still not changed!!!

In Oct sometime I called your Call centre for changing the debit date to the last day of the month, I was told this was done. The debit for October went off on the 25th. In Nov I called again, after being passed on between the loan department and debit order departments I logged a complaint. I was contacted and told that such a change required me to go into the bank. On 21 Nov I went into Absa Rivonia where I was given forms to fill in, the lady assisting me (an older lady her name begins with S) informed that she will contact me by Tuesday with the outcome of my request. I did not received any such a call. The debit once again went off on the 25th. On 5th of December, fed up of your nonsense, I went into ABSA Sunninghill to cancel my cheque and savings account. I asked them to confirm my debit order date for my loan and was told yet again that it's the 25th. I was told that the request for the date change had indeed been received by the branch and was awaiting the managers approval in Sunninghill. I was told that this would be done as a matter of urgency. I once again receive an sms confirming my debit order date for the 25th of December. Please sort this out immediately.