Mad having called during the action (8)
I believe the answer is:
deranged
'mad' is the definition.
(I've seen this before)
'called during the action' is the wordplay.
'called' becomes 'rang' ('ring' can be a synonym of 'call').
'during' means one lot of letters goes inside another.
'the action' becomes 'deed' (deed is a kind of action).
'rang' placed inside 'deed' is 'DERANGED'.
'having' acts as a link.
(Other definitions for deranged that I've seen before include "totally without reason" , "irrational" , "What Ophelia was eventually" , "Disordered, mentally perhaps" , "Made insane" .)