All over the galaxy beings who have fallen out of the education
system, just arrived from another world or are incapable of playing an
out of tune guitar in a grimy subway can always find employment
handling the endless complaints made to major corporations.
It doesn't matter if you can't speak the language, have a
crippling stutter (in some cases this is a distinct advantage) or, in
fact, have been surgically altered to have no vocal chords whatsoever,
the end result is exactly the same.
You would think that the language barrier shouldn't be a problem,
at least with a fish in your ear, but you'd be wrong.