Hi @Chas Shelton ,
the best option is to open a support request with Azure Support:
Create an Azure support request
Azure Billing and Subscription support is offered by Microsoft by no cost and it's for free.
Source: Azure Support plans
After clicking on Return to support request
you have to provide additional information and you should be able to submit the support request.
(If the reply was helpful please don't forget to upvote and/or accept as answer, thank you)
Regards
Andreas Baumgarten