Hi,
PowerBI is currently not supported in the Q&A forums, the supported products are listed over here https://learn.microsoft.com/en-us/answers/products (more to be added later on).
You can ask the experts in the dedicated PowerBI forum over here:
https://community.powerbi.com/t5/Forums/ct-p/PBI_Comm_Forums
For billing issues, I suggest you create a support request to the billing support, it's free of charge.
How to create an Azure support request
https://learn.microsoft.com/en-us/azure/azure-portal/supportability/how-to-create-azure-support-request
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(If the reply was helpful please don't forget to accept as answer, thank you)
Best regards,
Leon