I was invited for an interview for a position I wasn't qualified enough for, and I mentioned it, on the phone before. When I arrived for the interview, I realized the HR (the same one who spoke with me on the phone) didn't read my CV before. She said "Oh, you don't have any experience with X Y Z". and I replied - "yes, I don't, and I told you before". Such a waste of time for me to arrive at the interview and unprofessional HR.