Hi ,
I'm Dyari. Thanks for reaching out.
I’m very sorry this happened. Please note that this is a public user-to-user community. No one here has access to accounts, files, sign-in records, or support cases, and cannot restore or escalate an account ourselves.
Two-factor authentication greatly improves security, but it is not impossible to bypass. Possible methods include a stolen browser session, phishing, malware, a compromised recovery method, or an already authenticated device. These are only possibilities, this incident alone does not prove that Microsoft was hacked. Only Microsoft’s security team can determine what happened. However, a computer scan with Windows Security and changing all the other accounts' passwords after compromising an account are recommended.
If the account is pending closure, try signing in:
https://account.microsoft.com/
Normally provides a 30- or 60-day reopening period. After permanent deletion, but the account cannot be reopened.
You can also try account recovery process:
If this was a university-provided account, please contact your university’s Microsoft 365 administrator immediately, as they may have separate recovery or data-retention options.
Please do not post your email address, case number, or verification details publicly.