through (one's) good offices
Through someone's assistance or influence. It was through the State Department's good offices that we were able to locate our son in Cambodia. My uncle is great friends with the college dean, and it was through his good offices that I was able to get in despite my poor grades.
through somebody’s good ˈoffices
(formal) with somebody’s help: He eventually managed to find employment, through the good offices of a former colleague.