These days some people get transferred from analogue to digital lines and they get number 2 added to their number, prefixed. Guess what? When you dial the old number, you get the ring, but, guess again, nobody answers.
They used to have some kind of answering machine before to say when you dial the old number "the number has changed, prefix the number with 3 (or 2)", but now they gave up on this?
It's comic, I tells ya.