False Advertising

I was utterly disgusted by the service received today at Take n Pay Chatsworth. I ordered 2 full grilled chickens which was clearly displayed at R39.99 only to be told by the cashier that it was R59.99 I asked her why was it displayed for that price. The sign clearly read Every Friday R39.99. The cashier couldn't answer me so I asked to speak to thethmanager manager who was full of attitude and rolled her eyes me. Eventually we got tired of her attitude paid the R59.99 for each chicken and left. If something is not on special please don't advertise it and lie to customers.