Confront a head of compliance with price (6)
I believe the answer is:
accost
'confront' is the definition.
(I've seen this before)
'a head of compliance with price' is the wordplay.
'head of' says to take the initial letters.
'with' is a charade indicator (letters next to each other).
'price' becomes 'cost' (synonyms).
The initial letter of 'compliance' is 'c'.
'a'+'c'+'cost'='ACCOST'
(Other definitions for accost that I've seen before include "Approach boldly and speak to" , "Approach boldly or aggressively" , "Buttonhole" , "Approach boldly or impudently" , "Approach, stop and speak to" .)