non-existent account that is taken at the same time?

my account that i used a few years back cant be accessed because it doesent exist, but when i try to make another with the same email address it says its taken???. i cant access it and it has alot of important info that i require now, no help sites help me so please "help". my facebook account uses this email and i can access that fine so i have proof of its existence if needed. it was an old hotmail account from before they changed the sign in page and it uses @hotmail.com, just encase if this info helps.