Hi ,
Thanks for reaching out to Microsoft Q&A.
Suggest you to reach out to microsoft support for your billing related issues. Support for questions related to billing is free in azure and has been included for all azure customers.
https://azure.microsoft.com/en-us/support/legal/faq/#support-overview
To create a support request...
https://azure.microsoft.com/en-us/support/#get-support
Please Upvote and Accept as answer if the reply was helpful.