Hmm, strange.

If you could access it, you'd have heard the original elevator voice on '80s H2G2. We are on Mostly Harmless after all...

Maybe you'll have better luck with...
https://movie-sounds.org/tv-series-sound-clips/quotes-with-sound-clips-from-the-hitchhiker-s-guide-to-the-galaxy/glad-to-be-of-service-6j7