Managing personal Outlook.com account settings, security, and privacy
Sorry to hear you're having trouble.
As well as the information already provided I wanted to mention that once you've submitted any form, either for password reset or account access, please be sure to keep an eye on your email including the junk/spam folder for a response.
You can read more about the Sign In Helper via this link https://support.microsoft.com/en-us/accounts-billing/manage/microsoft-account-sign-in-helper