Hello,
Best option here is to contact billing support team. Please ensure to include your subscription ID, admin account used to create the subscription
Create support request from azure portal: https://learn.microsoft.com/en-us/azure/azure-portal/supportability/how-to-create-azure-support-request#go-to-help--support-from-the-global-header
If you're unable to create support request, try to reach support via global customer support as shown below.
Ensure to share your preferred contact method and team will connect with you to assist further.
Hope this helps!
Regards
Divya.