Worst customer service and worst Manger

Shoprite Dodsonville claim they don't sell wine on public holidays after 15h30pm, but they kept on selling to other customers when we was about to buy they say they don't sell after 15h30pm. Asked the Manger on duty to assist, She says it's write outside but we went outside and there was no notice so say they don't wine after 15h30 on public holiday. The managers name is Hopolang she was rude, has an attitude, couldn't help at all, other cashiers were selling wine after 17h30 but she refused me and my friends to buy. To show that she sells to people she knows. She couldn't even apologies for the inconvenience. Worst customer service there Would never recommend people to do their shopping there.