Give the facts, as bank clerks do (4)
I believe the answer is:
tell
'give the facts' is the definition.
(thesaurus)
'as bank clerks do' is the wordplay.
'as' becomes 'to the same degree' (I've seen this in another clue).
'bank' means to remove the middle letters (I've seen 'banks' mean this (the sides or banks of the word)).
'clerks do' becomes 'll' (I can't justify this - if you can you should believe this answer much more).
'tothesamedegree' with its centre taken out is 'te'.
'te'+'ll'='TELL'
Can you help me to learn more?
(Other definitions for tell that I've seen before include "Narrate; inform" , "William ..., skilled Swiss archer" , "Make an impact" , "Relate (a story)" , "Count - recount" .)