Link for written complaint needed

after a very unsatisfactory agent chat on October 24, 2026, I need to follow up with a written complaint which will lead to resolution of several specific concerns. I can find nowhere to do this. Is it better to go straight to FCC? 
Here is the text of my complaint:
On October 24, while using Xfinity’s website to troubleshoot an internet and TV outage, I was directed by a human chat agent to enter my Social Security number and date of birth through a secure link. The request was presented to me as part of resolving my existing service problem.

The agent repeatedly pushed me to obtain a card. I explicitly refused several times, stating that under no circumstances did I want a card.

I am concerned that my personal information may have been collected for a credit application or other Xfinity services that I did not knowingly authorize.

Please investigate and confirm in writing:

1. Whether a credit application, credit inquiry, new account, or financial product enrollment was initiated in my name.
2. The purpose of the link through which I submitted my personal information, and the identity of the company that received it.
3. Whether any credit inquiry was made and, if so, by whom.
4. That the full chat transcript, including the AI assistant’s actions and the human agent’s messages, will be preserved for investigation.
5. What steps will be taken to address the outage and the agent’s conduct.

I expressly declined any credit card or other financial product. I did not knowingly consent to a credit application or any additional services. My outage problem (no internet or cable tv) was actually caused by the AI agent, and 4 hours in chat with a human agent did not resolve the problem.  Please treat this as a formal complaint and provide a case number and written response.