PAID UP LETTER

I RECENTLY WENT TO PAY TWO OF MY ACCOUNTS THAT I WAS GIVEN DISCOUNTS FOR THE 1ST ONE IS WOOLWORTH AND THE SECOND ONE WAS MR PRICE, AS FOR WOOLWORTHS HANDED OVER ACCOUNT THEY GAVE ME DISCOUNT TO SETTEL THE ACCOUNT I DID THAT BUT STILL WAITING FOR A PAID UP LETTER FROM THEM AND I GOT ONE FROM MR PRICE BUT STILL DMC WONT UPDATE MY CREDIT RECORD, WHEN I CALL THEM ALL THEY DO IS TO GIVE ME NUMBERS TO DIFFERENT DEPARTMENTS AND WHEN I FINALY GET TO THE WRITE DEPARTMENT NO ONE IS ABLE TO ASSIST.