Can’t access account, won’t let me change password or recover account.

Outlook made me change my password because of a supposed "security issue" and I forgot to write it down and I forgot it the next time I went to log in so I had to change it again. When I was sent a link to an alternate email address the link wouldn't work. I tried accessing the link at a later time like it said, I actually tried multiple times a day for days in a row but it still wouldn't work. Then I tried filling out a form with all the info I could possibly give and I gave everything I could considering I could still see and read all my old emails from having been logged in on my phone but that still wasn't good enough and outlook wouldn't give me authorization!Please help I use that email for all my college and Billing stuff, I need it recovered asap!