I believe this falls under the classification of, "white whine"

Number of books waiting for me at the library yesterday, according to NYPL's online reservation system LEO: 6.
Number of books waiting for me at the library, according to the library worker on duty: 0, because they're "not shelved yet" and I should "just come back Monday." Oh wait, except Monday, I have to work, unlike Saturday when I do not. Argh!

If you don't know what a white whine is, this should set you straight.