EXORBITANT COST

WE HAVE A BUSINESS ACCOUNT AS WELL AS A PERSONAL ACCOUNT WHICH WE HAVE NOT BEEN USING FOR THE PAST FEW MONTHS. NOW THERE IS DAILY COST ACCUMULATING TO THOUSANDS OF RANDS ALREADY. I FAIL TO UNDERSTAND WHAT THIS IS FOR? WE DO NOT HAVE OVERDRAFT FACILITIES ON EITHER ACCOUNT, YET IT IS \OVERDRAWN"NOW WITH THOUSAND OF RANDS ON EACH ACCOUNT. MOSTLY IN THE PAST MONTH. WE WANT THE ACCOUNTS CLOSED. WRITE THE COST BACK"