Urgent Tenant Lockout - No Response on Tracking ID #2608010040001413 - Tiki Island Volunteer Fire Dept

We have a non-profit account and we are locked out of our account due to the admin having resigned and is no longer in contact. Our Fire Chief, Jason Grimm, has a login, but he has been locked out. His email is ******@tikiislandfirerescue.onmicrosoft.com. I am the Board Secretary of our organization (Tiki Island Volunteer Fire Dept) and I am assisting Chief Grimm in trying to resolve this issue. I was able to create a case the end of July 2026. I received a reply on 8-3-26 from a Microsoft employee that said they were handling my issue with "Tracking ID#2608010040001413". It said they would be in touch and I could reply if I had questions or other info. I've sent at least 2 emails asking for an update since then and have received no replies or updates. How can I get this escalated and get an answer or at least see what additional information they need, besides what I've already sent.