Must be something recent, I had a bad experience with a gate agent at IST - he was shouting "this is only for business class" at me (I'm TK E and was flying C). I replied "I'm in business class" and gave him a hard stare. Then when I was about the board he said sorry. I guess I don't look like someone who flies C.

I sent a feedback but they said they reviewed the CCTV but they couldn't see anything happened.