Someone changed the password of my Google account. I tried to recover it by using Google recovery, but unfortunately that someone has already changed the phone number and the other email address that is needed for the recovery of my account. So I tried other options like answering the questions that Google gave me.  One of the questions there is when did you create your account. I really can't remember it and I'm so frustrated. I hope someone can help me to recover my account.
Recover Google account when someone changed the phone number and the email address that is needed for recovery?
google account;account management