Hello ram doig
As it's related to billing issue requesting you to please raise support ticket from azure portal.
To create support ticket to azure billing team from azure portal please follow the below steps and let me know if it works or not.
1.From the resource menu, in the Help section, select Support + Troubleshooting. In the Support + Troubleshooting pane on the right, type "Billing" in the search box, select Billing, and then click Next.
2.Select the subscription and click Next. You will be presented with some suggestions to resolve your issue. If none of these apply, please follow the steps below.
3.Scroll down and you will find an option to Contact Support. From there, select Create a support request.
Enter the problem description (Issue type - Billing, Subscription, Summary - Billing, Problem type - Assistance with Bill, Problem subtype - Help with a billing discrepancy)
5.If the solutions appear again, click on 'Return to support request'. Click Next, and you will then be able to create the billing support ticket.
Kindly let us know if the above suggested solution helps or you need further assistance on this issue.
Thanks,
Suchitra.