Hi Vickry Santana,
Thanks for reaching out to Microsoft Q&A.
In this case I would suggest you first get all the billing details clarified and then reach out to vulnerability team for your security related incident. Billing support request via Azure portal is free for all Azure customers and doesn't require a paid support plan. Please select 'Billing' under 'issue type' while creating the support request.
https://azure.microsoft.com/en-in/support/create-ticket
Report security related incident
https://msrc.microsoft.com/report/vulnerability/new
Use the Get Help app here to chat online
https://support.microsoft.com/ContactUs
If you think your account has been compromised and need to be recovered
Also, I would advise you review security service offerings from Microsoft Defender for Cloud to help improve your security.
Let me know if you need any other help
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