Origin of bank charge brought about complaint (4)
I believe the answer is:
beef
'complaint' is the definition.
(I've seen this before)
'origin of bank charge brought about' is the wordplay.
'origin of' says to take the initial letters.
'charge' becomes 'fee' (fee is a kind of charge).
'brought about' says the letters should be written backwards.
The first letter of 'bank' is 'b'.
'fee' back-to-front is 'eef'.
'b'+'eef'='BEEF'
(Other definitions for beef that I've seen before include "Argument" , "it's unacceptable for vegetarian" , "See 24" , "Type of meat" , "Grumble - muscle" .)