I did an interview with Fergus at their office in Auckland a couple years back. I remember it well because I arrived to the interview on time but I was made to wait outside on the streets for almost half an hour because their door bell didn't work or something. Someone did eventually come down to open the door. So the interview basically started 30min late.
I politely told my interviewers I was stuck outside in the sun while waiting to be let in. The response I got was just "Oh". No apology.
I still politely completed the interview with no fuss. Then for a final show of unprofessionalism as I was signing out to leave I could hear the interviewers discussing my performance before I have even left the office. Just wow.