BANK CHARGES ON DEBIT ORDERS

AFTERNOON...THESE BANK IS ****MING US, EVERY TIME WHEN THE DEBIT ORDER BOUNCES THEY CHARGE YOU HALF OF THE AMOUNT,IN NOVEMBER THERE WERE TWO DEBIT ORDERS (R500) THAT WENT THROUGH IN MY ACCOUNT, AND THERE WERE NO FUNDS IN THE ACCOUNT FNB CHARGED ME R270.00 FOR PAYING THOSE DEBIT ORDERSON MY BEHALF, AND ON THE 02ND OF JANUARY THERE WAS AN AMOUNT OF R299.99 THAT WENT THROUGH AND FNB CHARGED ME R141.00, AND WHEN I TOLD THEM NOT TO PAY THOSE DEBIT ORDERS THEY TOLD ME THAT THEY CANT DO THAT...THESE BANK ITS A ****,YOU NEED TO CHOOSE BANKS WISELY...I REGRET JOINING THESE BANK