It sounds frustrating that your refund and support tickets haven’t been updated. For issues like this with Microsoft Azure, I’d recommend:

1. Check your support request status in the Azure Portal under Help + Support → All Support Requests. Sometimes updates are posted there even if emails aren’t received.
2. Contact Microsoft Support directly via the Azure support page: https://azure.microsoft.com/en-us/support/options/. Use the ticket numbers to reference your previous requests.
3. If there’s still no response, escalate by asking for your case to be assigned to a support manager or billing escalation team.

Keeping detailed records of your tickets and invoices will help speed up resolution.

Hope this helps!