You have your gmail account. You are trying to login and see the password is wrong ! Timid and disgusted, you quickly click "Can't access your account?" button, trying to reset password by your alternate email address. But no, hacker has already changed your alternate email address, your phone number, address, security question, everything ! What to do?
Don't worry.Only way to get back it, is to contact Google support center. Go to link below:
You will see a text, "having trouble signing in?". Select your field and submit to continue. Google will scrutinized your account info again, if everything is perfect then you will get back your account. It may take some days.