DIFFERENT PRICE ON THE DISPLAY WITH THE ONE ON THE TILL

SO TODAY I WENT TO PEP STORE TO BUY STOCKINGS, ARRIVING THERE THE STOCKINGS WERE DISPLAYED ON THE SHELVES AND IN THEIR SHELVES THE PRICE OF THE STOCKINGS WAS LOWER THAN THE PRICE I GOT AT THE TILL.WHEN I ASKED THE CASHIER SHE WAS SO RUDE TO ME TELLING ME WE ARE SUPPOSED TO READ WHATS WRITTEN ON THE SHELVES BECAUSE THAT PRICE IT WAS FOR OTHER DIFFERENT STOCKINGS AND YET THE ONES I TOOK HAD NO PRICES DISPLAYED ON THEIR SHELVES. THE CASHIER WAS DUMI FROM VOSLOORUS LISEDI SHOPPING CENTER PEP STORE