My account is hacked

Dears,
Unfortunately my account in hotmail is hacked as follow. My company website wasn't extended by our IT partner after expire time. So this website is taken by our competitor after it is expired.
The email reset address for my private Hotmail account is set to the email info@**** which is in the hands of hacker now. Whenever I ask for a new password and I get it, the hacker will change it after a few hours and again I do not have any access to my account.  I tried to remove this email through my account setting but it takes about 30 days and the hacker may change it again.
I want to close my email account in hotmail or remove the introduced email for password reset action. I can bring any evidence to show  that I am the owner of account.
I had filled the recovery form in Hotmail and could go inside a few times but the hacker has changed my profile in the account so that I can not access to the account any more.
Please help me to protect my private information.
Thanks