Xfinity Attempted Scam

I recently removed a service Xfinity had added and charged me for without consent, using the online chat support. During the chat with an agent (and after the agent claimed to have cancelled the unrequested service), the agent offered a separate "one time deal" and pushed me to provide SSN and DOB via a link to an external site. I have a chat transcript showing this. Is this behavior normal for online support? If not, is there a way to report it? I am considering switching to Starlink.