UNAUTHORIZED DEBIT ORDERS AND THE COSTS

I HAVE MORE THAN 25 UNAUTHORIZED DEBIT ORDERS THAT WENT OFF ON MY ACCOUNT, THE PAST 3 DAYS, THE COST OF A DEBIT ORDER TO DEBIT MY ACCOUNT IS R3.50 , THE AMOUNTS IS ALL UNDER R100.00 SO NO SMS, NOW I HAVE TO PAY ANOTHER R15.00 FOR EACH REVERSAL OF THE DEBIT ORDERS, I WAS AT THE BANK AND THEY ARE FULL OF EXCUSES, I AM NOT THE ONLY ONE THIS IS HAPPENING, I DEMAND THE R3.50 AND THE R15.00 PER TRANSACTION, SOME HOW THEY MAKING MONEY OF THE PUBLIC, THEY DON'T PROTECT OUR ACCOUNTS AGAINST THIS TYPE OF *****.