Hey @yokiddang, welcome to Figma Forum. We don't currently offer support in Korean here, so I hope it's okay that I'm replying in English.
I can't access or act on billing details from this public thread, so I've looped in our Customer Support team, who can look into the account and the charge with you directly. Your case number is: 2101835, and they'll be in touch at the email tied to your Figma account.
In the meantime, here’s some information on how to manage your subscription: Upgrade or downgrade your plan → Downgrade or cancel your plan. Subscription payments are non-refundable under the standard policy, though the Customer Support will review your request. If you're still on the paid plan and want to stop it from renewing while this is reviewed, the same article covers how to cancel.
Appreciate your patience as we follow up. 🙏🏻