Collocations for agency - noun

official | federal, government, public, state | UN | external, independent, outside | commercial, private | voluntary | international, local | multilateral | adoption, advertising, aid, dating, employment, estate, intelligence, marketing, news, press, recruitment, relief, research, travel, etc. | appropriate
Details of the problem will be logged by the Help Desk staff who will then contact the appropriate agency.

through an/the ~
He managed to find a job through an agency.