원고 4는 2009. 3. 17. 보험약관 미수령 등을 이유로 피고의 ◁◁지점을 방문하여 품질보증 이의신청서를 제출하였다.
On March 17, 2009, Plaintiff 4 visited the Defendant's OO branch office on the grounds that the insurance policy was not received, and submitted a complaint on the quality assurance.