Debit Order went off on wrong date

My vehicle is financed through MFC. My debit order date is the 25th of each month as that is the date my salary is paid. You do not have an option to select a different date like the 1st. Today is the 24th and MFC just decided to collect their debit order today instead of the 25th. This now cause my account to go into negative. So now there is bank fees i have to pay and I have no money left in my account for today for other responsibilities I have. This is not the first time this is happening. I have complained before with no success. I will never make use of MFC to finance my next vehicle!!!!!! If you cannot collect on a Saturday, then you have to collect on Monday and not a day earlier!!!!!