연간 할인 이후 갱신 취소 바랍니다

I paid 18,000 won per month as a student fee for one year. Since it is an annual plan, I thought it would be automatically canceled after 1 year, but it was not. I tried to cancel the renewal, but I didn't see a button to cancel. Please cancel renewals and automatic payments.

[MODERATOR: PERSONAL INFORMATION REMOVED]