INTEREST ON ACCOUNTS NOT IN ARREARS

I HAVE A 6 MONTH ACCOUNT AT WOOLWORTH'S.<br> I USUALLY PAY MUCH MORE THAN THE SUGGESTED INSTALMENT. <br> AS I KNEW IT'S NOT ALWAYS POSSIBLE FOR ME TO DO A PAYMENT ON DUE DATE I RATHER DO A PAYMENT BEFORE MONTH END WHICH SOMETIMES MEANS 2 PAYMENTS IN ONE MONTH<br> MY ACCOUNT IS NOT IN ARREARS BUT WELL IN ADVANCE ACCORDING TO THE 6 MONTH'S ACCOUNT POLICY.<br> HOWEVER THE WOOLWORTH'S GROUP CHARGE ME INTEREST ON AN ACCOUNT WHICH IS IN ADVANCE<br> I AM TERRIBLY UPSET ABOUT THE MATTER AND WILL DEFINITELY CUT MY CARD INTO PIECES AND SEND IT TO HEAD OFFICE NEVER MAKE USE OF THEIR SHOPS AGAIN<br>