Hello Robert,
Please note that only your Microsoft 365 administrators can help you in this situation. Even if you're an Admin yourself, you'll need to contact another administrator to reset your MFA settings. Here the step: Manage user authentication options.
On the other hand, if you're the only Global admin, you will need to contact Data Protection team. They can help you regain access to your tenant.
Please note that this forum is not Microsoft support, this is a user-to-user support forum. Therefore, I cannot directly escalate this for you. However, I can guide you how to contact Data Protection team.
Please try Phone support with the script below. Visit the following page and reach out to phone number via: Customer service phone numbers - Microsoft Support
From what I know, you will need to get past the initial AI system to reach the live support team. You can refer to the guide below for tips on how to get through more easily:

Hope you will soon regain access to your account
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