Mad to have called indeed (8)
I believe the answer is:
deranged
'mad' is the definition.
(I've seen this in another clue)
'called indeed' is the wordplay.
I cannot really see how this works, but
'called' could be 'rang' (called on the phone) and 'rang' is found within the answer.
The remaining letters 'deed' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
'to have' is the link.
Can you help me to learn more?
(Other definitions for deranged that I've seen before include "Upset" , "Crackpot" , "irrational" , "Crazy" , "Disordered, mentally perhaps" .)