Nuisance calls for help, two being cut short (2-3-2)
I believe the answer is:
so-and-so
'nuisance' is the definition.
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for so-and-so that I've seen before include "What's-his-name; a nuisance" , "This/that person/thing" , "Unpleasant person - whose name has been forgotten!" , "Difficult person - nobody in particular" , "Someone or other - unpleasant person!" .)