Welcome to the Microsoft Q&A Platform! Thank you for asking your question here.
Note: Only the account administrator has the ability to settle overdue charges in the Azure portal. If you are not the administrator, please reach out to them for assistance.
. If you need help settling your "Pay on overdue bill," you can contact the Azure billing team at any time by creating a support request. The support ticket will allow you to collaborate directly with the engineers for a prompt resolution to your issue.
https://learn.microsoft.com/en-us/azure/azure-portal/supportability/how-to-create-azure-support-request
Azure Billing and Subscription Management support is included at no additional cost with the Basic Support Plan.
http://azure.microsoft.com/en-us/support/plans/
If you have any further queries, do let us know.
If the answer is helpful, please and "Upvote it".