Debit Order Dates

Capfin recently sent out an sms requesting on which date to debit for December 15.<br> However as they do know the debit order date as arranged previously is for every 25th of each month, they debit on my account yesterday the 10th of December 15. <br> I do not appreciate this as they are well aware when to debit my monthly instalment & now for this month they just went & debit 2 weeks before my due date..... I am also concerned as to when they did load the debit order & for how many days the debit order was already in tracking & further who is responsible for the bank charges on this now????? this is unacceptable, no consent was given to debit this early!!!