Is there anyway to recover my account???

I was being stupid and gave someone the code microsoft emails to you to someone else asking for it, as it seemed relatively unsuspecting. As a result, this person changed literally everything tied to the account, including the email and what I can only assume to be a backup email, a 25 code thingy, the password, and has since stolen the games I have bought with that account. This is to be completely honest kind of devastating, as I've dumped thousands of hours into this. I have submitted multiple forms, and each time I am emailed back that what I put in is insufficient. I tried calling the support number but it just told me to submit in a form again. I've tried sending an email to it but I can't seem to be able to get to the support page, as it calls it a "Bad Request-Request Too Long" and underneath it it says "HTTP error 400. The size of the request headers is too long". It would be great if I could directly message a representative of microsoft or something so I can show proper proof that I formerly owned the account prior to doing the incredibly stupid thing of giving that person the microsoft code. Thanks in advance

:)