Help!! Locked out of my Hotmail account of 15 years!!

I have a hotmail account (and have had for 15 years!) and i believe it was hacked and now I can't get in!  I have gone through several attempts with the 'help' links on Hotmail and received emails back on my wife's email but I cannot get back into it....I filled out a 'form' in detail but eventually it came back saying it wasn't enough and now it says I should just start a new account!!  I have tons of personal stuff locked in there, contacts for people... I will lose it all!!!  HELP!!!  There must be a way I can get help on this???  I can list off all kinds of details about the account, folders, contacts, recent emails sent etc....