help, hotmail has been blocked by microsoft, havent the foggiest idea why or what to do

help please for this old lady. microsoft thinks the e-mail is being used by someone else, wants me to verify info, have done so, they don't believe me, asking for stuff that I simply can't remember like who emailed me last, still can't access acct. can't get to my home page, can't do anything and everytime I try to correct something, it says try again tomorrow. EEK! Other than buy a MAC, now what?