👋🏻 Hi @Lerissânia Freitas, welcome to the Figma Forum!
We don't currently offer support in Portuguese in this space, so I hope it's okay that I'm replying in English.
I can't review payment or account details from this public thread, but I've passed your refund request to our Customer Support team, who can look at the charge directly. Your case number is: 2081473, and they'll be in touch at the email on your Figma account.
For reference, here's how cancellations and billing work on Figma: Upgrade or downgrade your plan → Downgrade or cancel your plan.