comcast.net email

in the 1980/1990's when i got my first internet access from comcast i set up comcast.net email accounts for me my wife and 2 kids.  I have deleted my kids accounts maybe 20 years ago, but my wife's account and my account are still active.  We are divorced now but she was still using her comcast.net up until a few days ago.  she cannot authenticate with the mail servers, so the prompt is asking her to reset her password.  Unfortunately, the phone number for security code has been disconnected so she can't continue.  she called support and was online for an hour before they dropped the call. i used to be able to access all the email accounts that were originally built by me in the 80/90's.  but that web interface is no longer available.  i thought i would try here before i call support again. the problem is she does not have any comcast/xfinity services now so they say they have no record of her, but she has been sending and receiving mail up until a few days ago.   thanks for helping