Hi @Vladimir Nesterovsky .
you have to contact Azure Support via Azure Portal to open a support case with Microsoft Azure support for clarification.
Azure Billing and Subscription support is offered by Microsoft by no cost and it's for free.
Source: Azure Support plans
If this is not working for you the other option might be to call Microsoft's Global Support: Global Customer Service phone numbers
(If the reply was helpful please don't forget to upvote and/or accept as answer, thank you)
Regards
Andreas Baumgarten