Bad attutude from a rude waitress

I went into the restaurant which had one glass door open, as i walked in the lady at the cashier told me that they were closed and i told that her its okay im only looking for someone and she said it was fine, as walked further in there were two waitresses sitting down and one of them told me the door was closed and i informed her that i was looking for someone and she said again that the door was closed. She kept on telling me that the door was closed even if i tried to explain myself as if i was just a stupid little person. For someone who works in the customer service industry she could have just told me that there were no more customers inside instead of just being rude to me. To think that had great childhood memories that just wanted to pass down to my children I would just be crazy to set my foot in wimpy ever again.