Repeatedly Ignores Customers Instructions

Last year i had the exact same issue. I have a personal loan with Nedbank and last year they early debited my account in December without my consent. After which i told the lady i dealt with to please put a note on the system that they are not to do so the following year. This year rolls around and guess what? They early debit my account again. I only get paid the last working day of the month in December, same as every other month in the year so by early debiting they are using money vitally needed for the holidays. Sort out ASAP!