Biltong not on special at the till

Pick n Pay is trying to get back. Customer service has improved as has correct prices in-store. Sadly, today at PnP Moreleta Park in Wekker Road the advertised biltong was not R119.99 but R159.99, despite this being advertised in your leaflet and a shelf talker too. Cashier wants to convince me that the till price must be the correct price....