I had this happen today for an email account I only use for ebay. I suspect since it is seldom used and has a connection to ebay that it is a hacking issue. I entered the info needed, answered the call which was simply a recording with my "code". I entered that and was in my Yahoo account immediately.
Would not let me into my yahoo mail until i got a verification code that had to be sent to my cell phone,,,,,then this phone number is what i got,,,,,not only does it not get me in my yahoo mail but no one answers the phone,,,,,it keeps being busy!!!!
I too am locked out of my yahoo email account. I did give my phone number and almost immediately got a call from from 408 355 9870 . I do not answer calls whose number or name I do not recognize so my answering machine picked up. No message was left so I still have no verification code to get into the yahoo account. Luckily, it isn't my main email account so I guess I will discontinue using it until yahoo decides to let me into my own account!!!
I had a call from this number yesterday morning...did take the call and was given a 3 digit code to enter. There was no place to put the code, but I did get back into my yahoo account by going through my facebook acount..and changed the password! I would like to know what the scam is about and also how they are managing to lock us out of our Yahoo accounts!