Service still no good (8)
I believe the answer is:
evensong
'service' is the definition.
(type of church service)
'still no good' is the wordplay.
'still' becomes 'even so' (both can mean 'nonetheless').
'no good' becomes 'ng' (abbreviation).
'evenso'+'ng'='EVENSONG'
(Other definitions for evensong that I've seen before include "Religious service" , "... Prayers" , "6 [SERVICE] ?" , "Late afternoon church service" , "Anglican service" .)