Please try to recover your Yahoo Account as under:
Please go to the website http://mail.yahoo.com/ and see if you are able to login to your Yahoo email account.
Now, if you are not able to login, please go to https://edit.yahoo.com/forgotroot, and try to reset your Yahoo email account password.
B. Click the link:
topic=password ***** sign in
sub-topic=Unable to Sign in
Enter your Yahoo ID under Recommended options and click Submit.
Click "Email" under "We're here to help".
And fill out details.
Provide a working alternate email address as contact email address.
You can call Yahoo on this numbers, but, you may be put on hold for some time.
Call Yahoo toll-free at 1-***-***-**** if you’re in the U.S. or Canada.
If you’re not in the U.S. or Canada, call Yahoo toll number at 1-***-***-****.
If you have any other query regarding this issue, please do not hesitate to let me know.
And if you can take a second to rate my service by clicking stars at the top of the screen then submit, that would be greatly appreciated.