December Debit order date amendment for student loan

I have received a notification from Standard Bank regarding an early debit order for December. As required, I informed the bank that I prefer my debit order to remain scheduled for the last day of the month, in accordance with my contract.

Although I received a call from a representative, after being on hold for approximately 20 minutes, I was advised that the December debit order could not be adjusted to run on the last day of the month.

I am paid on the last day of the month, regardless of it being December, and I need the debit order date to remain unchanged. Processing the debit order earlier than agreed could result in insufficient funds and may negatively affect my credit record. I therefore request that the debit order be processed on the contracted date, which is the last day of the month.