Hi! Unfortunately, in this situation, Microsoft support agents are unable to assist directly. They will inform you that you must successfully complete the account recovery form in order to regain access. I understand how challenging this can be, but it is in place to protect your account. Ultimately, only the information you provide through the recovery form can be used to verify that you are the rightful owner of the account.
Visit the next link to get help on how to fill the Microsoft account recovery form successfully: