Costco Wholesale interview questions

I had two interviews with Costco for seasonal help. I filled out schedule of available times and was approved by managers I interviewed with at the Alpharetta, GA location. Both managers professional, polite and courteous. I was asked to come on for third and final interview two days later. Meetings were rearranged to accommodate interview. I arrived early and was directed to main office by friendly customer service representative that worked at main desk. Upon waiting over twenty minutes in office, manager for final interview arrived. He rudely stated, "Not sure why you're here. You're not needed. The other managers shouldn't have had you come in!". And that was all. I thought Costco was more organized and specialized in communication.