Hi,
Please create a new billing support request using instructions below.
Use this link to start the process:
https://portal.azure.com/#view/Microsoft_Azure_CostManagement/Menu/~/support/openedBy/AzurePortal
Fill out Summary, Problem type: Refund request, click Next. There will be a delay, then some recommended solutions will be shown. DO NOT click request refund button and/or on any of the recommended options shown.
In the upper left corner, click Return to support request
Click Next to move to Additional details tab, fill out required information, email/phone, etc., click Next, review details and submit case. After submitting you should receive an automated email with a few minutes and a support engineer should contact you within 1 business day.
Please click Accept Answer if the above was useful.
Thanks.
-TP