Listener's complaint (7)
I believe the answer is:
earache
'listener's complaint' is the definition.
'earache' can be an answer for 'complaint' (a type of medical complaint). I am not sure about the 'listener's' bit.
'listener's complaint' is the wordplay.
'listener' becomes 'ear' (body part which hears or listens).
'complaint' becomes 'ache' ().
'ear'+'ache'='EARACHE'
Can you help me to learn more?
(Other definitions for earache that I've seen before include "Form of torture" , "may involve hammer and anvil" , "Pain inside the head" , "Pain in an aural appendage" , "listener's discomfort" .)