Hello @Romuldo Ducon
As you mentioned azure credit amount I assume you are talking about Azure free trial subscription. Please be informed after the 30 days trial period / spending limit of 200 USD is reached you will be requested to upgrade the subscription. If you opt not to proceed, the Azure subscription and account will be disabled. You can remove the card by following the steps as mentioned below.
You will not be charged for something you are not using. 482$ is billing forecast based on your current usage. I have attached link from Microsoft official free trial subscription FAQ page. This has frequently asked free trial queries I hope will help you: free-account-faq
Once subscription is deleted or disabled you can remove the card by navigating to Cost Management + Billing > Billing profiles > Payment methods and delete the payment method. Below reference document has step by step instructions along with screenshots
At any time, you can choose to discontinue by following the steps in this article which details about how to delete free trial subscription: cancel-azure-subscription
In case if your query is different or for other subscription offer type please let me know I’ll be glad to assist you.
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