Kwikspar Arcadia Rudeness

Last night I went to buy a couples of things at Kwikspar in Arcadia , I saw eggs with a label R49.99 I was happy because they were cheap all to find out at the till they R60.99 so as the law states you pay the amount you saw , the black lady I don't know if she's a manager or what but she refused to reduce the amount as she said that special is over , I tell her refardless the price is still up which is misleading she started speaking up and I answered as she called her boss (white) thinking I was gonna be intimidated since I was black , I told him , he ignored me and said special is finished ,,,, its not the first time experiencing such at this Spar they are rude very rude , thanks to the cashier she was wonderful , If it was for me I'd give them a -0 *.