@Nunziata Turi Thank you for contacting us!
Azure billing and subscription management team should be able to help you with your concern. I recommend you to file a billing support request at no extra cost to get this routed to the appropriate team. The ticket enables you to work closely with the support engineers and get a quick resolution to your issue.
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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