Hey @정진성 — thanks for getting in touch here!
We don't currently offer support in Korean on Figma Forum, so I hope it's okay that I'm replying in English.
Billing details can't be handled on this public space for privacy reasons, so I've opened a case with our Customer Support team on your behalf. They'll follow up directly with next steps — your case number is: 2036319.
To prevent any further charges in the meantime, it's worth confirming the plan is fully cancelled. Here's the step-by-step guide: Upgrade or downgrade your plan → Downgrade or cancel your plan. Once cancelled, your team stays on the paid plan through the end of the current billing period, then downgrades to the free Starter plan. If you don't see a Cancel option, Customer Support can take care of it directly.
Thanks for your patience as we get this sorted out.