SMART SHOPPER CHEAT

Some time last year diring the last quarter of the year, i went to PnP in Kagiso (Kagiso Dr) and i was assisted by one of the till ladies to convert point to cash. the points converted to around R60 if not mistaken. i had the slip and went to swipe the card it declined saying i had a R0 balance on the account. a lady called Mabatho came to the scene and assisted with taking my details (after i had waited almost 30min just for buying bread and a drink) everytime i go there i get an apology and im told the store is awaiting feedback on my query. UNTIL WHEN? i have given my card number several times, left messages, been sent from pillar to post for nothing. i even went to the extent of sending an email to PnP and have never received a response. CAN SOMEONE SOMEWHERE GET ME FEEDBACK FROM SOMEONE SOMEWHERE????