Bad service delivery

I have been having problems with the payment of my personal loan, I have moved my debit order date from the 28th of each month to the first of every month. due to the lack of competency absa still tries to debit on the 28th of each month , i have changed this date 6 or 7 time already from the 28th to the first of every month , now the keep on charging me because Absa needs to debit again on the 1st of the month. If Absa did their work in the first place i would not have had any issues. I do not want to speak to a consultant from the loans department , i have done this a few times already and No one can help me, i have been to a few branches and this matter is still not fixed. i need to speak to someone higher that the branch manager and the consultants.