Representing Hake for LineFish

I went to Ocean Basket, Camp's Bay yesterday at around 5pm. My husband and I ordered a Platter for which according to the menu is served with linefish. Low and behold when the platter comes it has 2 pieces of hake. We asked the waitress why they gave us hake and at first she said the hake was their Llinefish of the Day\. I explained to her that hake could never be a linefish. Because she admitted to not knowing what linefish is