Confused situation with nothing right in church service (6)
I believe the answer is:
morass
'confused situation' is the definition.
(I've seen this before)
'nothing right in church service' is the wordplay.
'nothing' becomes 'o' (looks like zero - 0).
'right' becomes 'r' (common abbreviation).
'in' means one lot of letters goes inside another.
'church service' becomes 'mass' (I've seen this before).
'o'+'r'='or'
'or' inserted into 'mass' is 'MORASS'.
'with' is the link.
(Other definitions for morass that I've seen before include "Tract of swampy land" , "Area of boggy ground" , "Muddled situation" , "mess" , "Slough - marsh" .)