@Anonymous Sorry for the inconvenience this must have caused!
After 30 days of free trial, you would need to upgrade your account to further enjoy 12 months free services mentioned in the FAQ - https://azure.microsoft.com/en-in/free/free-account-faq/
Since you are unable to upgrade, I suggest you to contact Azure subscription management team by raising a support request. Here is the link - https://learn.microsoft.com/en-us/azure/azure-portal/supportability/how-to-create-azure-support-request to create support case.
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