Miscellaneous topics that do not fit into specific categories.
This is community forum, no one here works with the support team you spoke with, so no one here can connect you back there or give you a call.
Go to https://support.microsoft.com/contactus, Type "Billing" and press Enter. On the next screen, click "Contact support" at the bottom of the page, then choose "Microsoft 365" > "Manage my subscription". You’ll then see the option to chat with a Microsoft support agent who has access to your account to help review the issue. Once connected, you can give them your case number.
You can reference this detail step by step instruction with screenshots I posted in this thread: https://learn.microsoft.com/en-us/answers/c/2714817