I had applied for another role online. Their HR rep contacted me by phone, reviewed my experience and referred me for this role instead.
On the day, the interviewers were late, grumpy (complaining about the inconvenience inflicted on them during their office renovations), unprofessional, rude and dismissive.
I had researched the company and interviewers beforehand, and when I asked one of them about his current MA course, he was annoyed and cut me short.
Overall, I was very glad to get insight into how unfortunate I would be to work there. The interviewers showed themselves at their worst, and I was glad to get out right away.