Microsoft 365의 기능은 사용자가 구독, 계정 설정, 청구 정보를 관리할 수 있도록 돕습니다.
Hi! My name is Aj and Im an Independent Advisor here to help! Im sorry to hear about your account. First, I would suggest to secure your account by resetting your password, sign out everywhere.
Since you mentioned that the order is missing kindly contact support directly https://support.microsoft.com/contactus and choose Billing / Order / Unauthorized charge). Use chat or phone and give them.
In case microsoft wont be able to see the charges please contact your bank or the kakao pay support and file a dispute/chargeback.