Issue with my email password getting changed.

After realizing my phone was not able to sign into my email I checked to see what was wrong. Someone had gotten my email and changed the password. I go to send a verification code to my alternate email, yet the email's Spam filter is blocking it. The alternate email is a child account disabling me to check the spam folder. Now the final problem arises the parent of the alternate email has changed its address stopping me from altering the parental controls.