Hi @Oingsterz — welcome to Figma Forum, and thanks for reaching out.
We don't currently offer support in Korean on the forum, so I hope it's okay that I'm replying in English.
I'm not able to access billing details from this public space, but I've opened a ticket on your behalf with our Product Support team. Your case number is: 1857844, and they'll follow up at the email tied to your Figma account.
If you haven't already, I'd recommend cancelling your plan now to prevent any further charges while the refund request is being reviewed: Upgrade or downgrade your plan → Downgrade or cancel your plan.
Please keep an eye on your inbox for next steps. 🙏🏻