Azure Developer Support accidental purchase refund request

I accidentally purchased the Azure Developer Support plan on September 30, 2026. The Azure portal says the expedited refund option is unavailable. I submitted two Billing support requests, but both were categorized as Credit request for a scenario not listed; both remain Open, and New message is disabled. I am requesting a manual refund review by Azure Billing and guidance on the correct issue type (for example, Billing → Refund request). If my existing requests were miscategorized, should I file a new request under the correct category and reference them? Please advise. No account, invoice, bank, or ticket identifiers are included for privacy.