Hello anonymous user,
Welcome to the Microsoft Q&A platform.
It's very difficult to provide more details on your charges without looking into the details of the charge occurred in your subscription.
You can contact Billing & Subscription team at free of cost by choosing the below options.
Option1: Get one-on-one guidance on Azure Pricing by connecting with us directly.
Option2: Create a billing support ticket.
For more details, refer Azure Purview - Pricing page and How to create a support ticket for Azure billing and subscription issues.
Hope this helps. Do let us know if you any further queries.
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