Subscription deleted for non-payment - cannot pay invoice in portal and cannot open billing support ticket

Hello,

My pay-as-you-go Azure subscription was deleted due to non-payment. I want to pay the outstanding invoice, but when I open Cost Management + Billing > Invoices > Pay now, the portal shows: "You can't pay this invoice in the portal. Please contact Azure Support for assistance."

I also cannot create a support request:

• The subscription no longer appears, so the normal Help + support flow does not let me raise a billing ticket.
• Engage Center shows "No Access" for my personal Microsoft account.
• "Contact your billing administrators" only opens an email to myself, because I am the account owner.

This was a personal learning account in India (billed in INR). I would like to:

1. Get a supported way to pay the outstanding invoice.
2. Restore my billing account so I can create a new subscription.
3. If possible, request a one-time goodwill review of the charges. Most of the bill came from an SFTP endpoint on a storage account that I did not realize is billed hourly even when idle.

I can share the invoice number and subscription ID privately with a Microsoft moderator.

Thank you.