HELP! i think someone else has been using my microsoft account

right, im in a real knot here... (as in this is so frustrating)

my microsoft account has apparently been used by another person?!!? and i'm now suspended out of it...now my recovery email that i have also has this problem, and that email is my oldest email, which i  access to. i've tried sending like account questionaire reviews and stuff, but i seem to cant prove that im the account holder. i have all the genuine proof it's just i dont have enough of it..

so please, can someone help me?

ALSO: the phone number is my old phone number.

thanks

-LolPA