Hi @JR
Welcome to Microsoft Q&A Forum, Thanks for asking question here!
If you are facing issue to creating a support ticket for your Azure sponsorship and account billing issues, follow with below steps:
1.Sign-in into azure portal.
2.Navigate to help + support page.
3.Click on create a support ticket.
4.Choose issue type as a billing.
5.For subscription select azure sponsorship.
6.Fill the summary related to Azure sponsorship.
7. Select the problem statement.
8.In the contact information tab, provide your contact information and select the preferred method of contact.
9.Click on the "Create" button to submit the support request.
Support link: https://azure.microsoft.com/en-us/support/create-ticket
Referral link: https://learn.microsoft.com/en-us/azure/azure-portal/supportability/how-to-create-azure-support-request
Please let me know if you required anything!