Service is nevertheless no good (8)
I believe the answer is:
Here is my best explanation:
'service' is the definition.
'nevertheless no good' is the wordplay.
'nevertheless' becomes 'evenso' ('even so' can be a synonym of 'nevertheless').
'no' becomes 'n' (common abbreviation).
'good' becomes 'g' (abbreviation).
'is' is the link.