Did the cleaner misinform him? (7)
I believe the answer is:
charlie
'him?' is the definition.
'did the cleaner misinform' is the wordplay.
I cannot really see how this works, but
'cleaner' could be 'char' (charwoman is a type of cleaner) and 'char' is located in the answer.
'misinform' could be 'lie' (lying is a kind of misinforming) and 'lie' is present in the answer.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for charlie that I've seen before include "Silly person" , "Fool; C (radio comms)" , "Fool - drug (slang)" , "tail-ender" , "dope > (cocaine)" .)