Sometimes that is just bad internal communication.
I once had something similar happen, but I'd been flown across country for a couple days of interviews. Day 1 morning someone met me and said "this is awkward, but...".
I couldn't be too mad, it was in an interesting city and I effectively got a short paid for vacation.
I had one interview one time in around 1999 with Merrill Lynch in Princeton NJ that I got flown out to and then I show up and get signed in, then I am meeting with some guy who tells me that I was never scheduled to be interviewed.... I told the guy I literally flew out here from 2000 miles away to do this interview and had emails and plane tickets to prove it, and they just told me like that and I left without the interview.... I didn't have to pay for the plane tickets, but that was probably the most ridiculous one I ever went to.
I once had something similar happen, but I'd been flown across country for a couple days of interviews. Day 1 morning someone met me and said "this is awkward, but...".
I couldn't be too mad, it was in an interesting city and I effectively got a short paid for vacation.