In regard to billing, assistance with your subscription you may open billing support case (no charge) so that you can discuss with support engineer.
Please carefully follow my instructions below to create billing support request and avoid getting stuck in endless loop. Billing support is free.
Go to the Portal.
Go to the Portal and search for "Cost Management + Billing." Click on "New Support request." Describe your issue as "billing," as shown below then click "Next" and choose your subscription. Come all the way down and select "Contact support" and "create a support request".
Provide the required details as shown below.
After clicking the "Next" button, click on "Return to support request" on the second page Fill in the remaining details and create a new request.
Note: the refund process will begin once the support team contacts you and gathers the necessary details. Apologize for any inconvenience this may have caused you.
Hope this helps!
let us know if any help, we will always help as you needed.!
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