Number here centre banned — day completely ruined (7)
I believe the answer is:
screwed
'completely ruined' is the definition.
The definition and answer can be both to do with contact as well as being past participle verbs.
Maybe they are linked in a way I don't understand?
'number here centre banned day' is the wordplay.
'number here' becomes 'scr' (I am not sure about this - if you are sure you should believe this answer much more).
'centre' says to take the centre.
'banned' becomes 'illegal' (similar in meaning).
'day' becomes 'wed' (abbreviation for Wednesday).
The central letter of 'illegal' is 'e'.
'scr'+'e'+'wed'='SCREWED'
(Other definitions for screwed that I've seen before include "Swindled; twisted into place" , "Tightened - fastened (together)" , "Spoiled" , "tight?" , "in serious trouble" .)