Hi @marcelosousa1_gmail, welcome to the community!
In this case I think it's better contact the Atlassian/Trello Support, link below.
https://trello.com/contact#/
You can find out more about cancellation/refund policies here: https://www.atlassian.com/licensing/cloud#cancellations-refunds
I hope that helps.
Cheers,
Melo
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