INCORRECT BILLING

I HAVE A FUNERAL POLICY AND MY PROBLEM WAS THAT THEY WERE DEBITING ON THE WRONG DAY ..AFTER SPEAKING TO THE MANAGER CRAIG ABOUT THE DEBIT DATE HE MENTIONED THAT MY POLICY WAS OUT STANDING BY ONE PAYMENT IN AUGUST 2013 OF WHICH IS SAID IT CAN NEVER BE.I NOTICE THAT THE WERE DOUBLE DEBITING MY ACCOUNT THEM I ASKED FOR A PAYMENT STATEMENT.TO MY SURPRISE THE BILLING WAS VERY WRONG.I JUST DON'T WANT TO DEAL WITH OLD MUTUAL ANYMORE SO ALL I NEED IS ALL MY MONEY BACK WITHOUT HAVING A PROBLEM..