Yesterday, i noticed that my Yahoo email is hacked. I didn't add my mobile to this account. And also i think the hacker is change the Secondary Email. I think i can remember the security question i answered. When i try to reset with That it shows We're sorry that you cannot access the alternate email address or mobile number you provided for your account. Would you like to try another email address or mobile number? Please return on January 12, 2012, after 22:24 CST, when you will be able to reset your password by answering the secret question you chose for your account. Any way to get my account back. Please help.
I found this article that may help you. http://help.yahoo.com/kb/index?locale=en_US&page=content&y=PROD_ACCT&id=SLN2047&impressions=true You can contact Yahoo Customer Care team directly but you still have to provide some account verification information.
If you feed your right data and information not fake than you can contact yahoo help desk. They must facilitates you.
You can take the help from Yahoo Support Team. They always welcome you & also provide you the full help whatever you need...