Terrible customer service and misleading adverts

Absolutely terrible customer service!! Went in at Edgars to purchase a liptick from Inglot with a banner that says 50% off, calling someone to assist and waiting for 10minutes without any assistance, only to get to the till and get told that it is full price. Upon confronting the Inglot staff (Shantz was on service) I am told that it is only on selected items, which the banner does not specify! Thereafter, trying to explain the situation to the Inglot staff she refused to assist being extremely rude and arrogant. This type of service is why Edgars is in financial trouble and Inglot cosmetics are getting a bad reputation! Staff should stop treating customers like they are nothing. Absolutely disgusted in the way Edgars staff and Inglot reps in Edgars treated me.