hotmail account hacked, password changed. can’t get in.

My email account at *** Email address is removed for privacy *** has been hacked and the password has been changed. I can't access it. Could you please help me? It is very important that I get the account back as I have over 5200 emails saved there and it is my only record of every business contact I've collected over the past 10 years. It would be impossible to duplicate this information. I can answer any security question you have on file. Thanks!

Michael Appleton