Hello Lisa Pince,
I understand how worrying this situation is, especially when your Microsoft account email was changed and two‑step verification appears to have been bypassed.
I can see there is already a Q&A Assist answer in the thread, and its overall direction is appropriate for an account-compromise scenario. I would like to add a couple of clarifications.
First of all, please note that this is a user-to-user forum. Moderators and contributors (including external Microsoft employees) cannot access back-end account systems or reverse account/security changes. When all security information has been changed and two-step verification is enabled without your access to the verification methods, the automated recovery options (including forms) may not be able to validate ownership. In that situation, the remaining step is to contact Microsoft Support so the case can be reviewed through the official channel.
Please follow below steps to reach a live chat agent:
1, Visit the Microsoft Support contact page: Contact - Microsoft Support
2, In the search bar provided on the page, type "Account recovery" and press Enter.
3, Click on the "Get Help" button that appears.
4, Scroll down the page until you see and click on the "Contact Support" option.
5, When prompted to select your product or service, choose "Other Products".
6, For the category, choose "Manage account security".
7, Look for and click on "Chat with a support agent in your web browser".
8, Confirm your personal email when prompted - this is the email Microsoft will use to communicate with you during and after the support session.
9, When connected, clearly explain your situation. Be concise but include all relevant details.
I hope this points you to the correct channel for further review and assistance.