Delighted to have credit spent? (7)
I believe the answer is:
tickled
'delighted' is the definition.
(tickled can mean very pleased)
'credit spent?' is the wordplay.
'credit' becomes 'tick' (I've seen this before).
'spent?' becomes 'led' (spend can mean to live or lead a certain life).
'tick'+'led'='TICKLED'
'to have' is the link.
(Other definitions for tickled that I've seen before include "Made to giggle" , "Pleased" , "to be attracted to poacher" , "Delighted" , "Amused" .)