https://www.t-mobile.com/community/discussions/gateways-devices/what-if-someone-h%F0%9D%95%92ck%F0%9D%95%96d-my-facebook-and-changed-my-email-and-password-and-phone/178548

#1 Contact Facebook $ support via Report a problem, It can be found by selecting the Help and Support -I -?33-- -(611)-- -(3633)- button in the upper right corner. You can only access this option after you have logged in, which was not the case with the previous option.