Language Scientific interview questions

I had a very good experience throughout the entire interview process. The position was explained to me very clearly by the hiring managers, and I was regularly notified about the status of my application.

The office was deadly silent to the point I thought it was empty until I turned a corner and saw a large amount of people in one space. Was asked to come back for a second interview, however was cancelled on at 10PM the night before the scheduled interview due to an 'emergency'. I have not heard back since. Incredibly unprofessional in my opinion.