Hi,
In this case, your remaining option is the account recovery form: https://account.live.com/acsr
If you have already used the account recovery form and received a reply stating that the information you provided was insufficient, you will need to complete the form again with any new information you remember. Please note that you can submit the form up to two times per day until you recover your account.
Helpful tips:
Include contacts, subject lines of past emails, or any Microsoft services you used (such as Skype or Xbox).
Complete the form using a device and location you have previously used to sign in.
The more accurate information you provide, the better your chances of success.
If you're still unsuccessful after several attempts, please refer to the "Account recovery unsuccessful" page:
Note: Account recovery is fully automated, with no human intervention for security reasons. Even Microsoft Support cannot manually recover your account, regardless of any proof you provide. They will most likely advise you to complete the account recovery form again and answer the questions as accurately as possible to regain access.