Outrageous BANKING CHARGES FOR DECLINED DEBIT ORDERS BY FNB

On the 16 some of my debit orders was supposed to go off. There was money for the specific debit orders. To my surprise more debit orders went off and therefore FNB decide to decline all my debit orders. WHAT IS UNACCEPTABLE IS THAT FNB CHARGE ME R115 for each debit order that did not go off that was a hectic amount. It is outrageous that FNB CHARGE R115 FOR EACH DEBIT ORDER AS THERE WAS MONEY IN MY ACCOUNT.THEY COULD HAVE JUST CHARGED ME FOR 1 BUT FOR THEM TO DECLINED ALL MY DEBIT ORDERS AND CHARGED ME R115 FOR EACH.