Zinger wings out of stick.

I arrive at KFC in Ballito on the 19th March at around 9:30pm. I go through the drive through to place my order. Two Zinger wings (8 zinger wings altogether) and a milky bar ice cream cup. I place my order and wait 15 minutes in the queue to be told that they are out of stock for zinger wings. No one told me when I ordered the Zinger wings that they were out of stock. The lady behind the counter said, that they should of told me once I placed my order. \Umm.. its a little late now don't you think?"Absolutely disgusting! """