I just got scammed from directly inside Xfinity Assistant chat

I received this link when talking to an agent in the legitimate Xfinity chat application. It asked for my ssn and bd. I called Comcast security and confirmed it is a phishing attack.

"""
Your personalized secure data link is https://iguard-po-1pp.slb.comcast.com:9443/ui?.....

Please use this link to our secure information site to safely enter the requested information. I'll be available if you have any questions throughout the process.
"""

This is unbelievably terrifying.