Misleading the consumer by sending info after cut-off date

I received a SMS at 15h15 on 21 September informing me that MFC would deduct my debit orders on the 22nd (contract date is 25th). Further more the SMS reads that you must contact MFC BEFORE 21st to change this back. I have been online for over 10 mins with no answer. It is already the 21st. This is utterly unacceptable. I will not pay earlier and have communicated this to you before