I need to file a complaint

I was in a chat with an agent over a phone issue that I’ve had since receiving the phone. I advised him that I was going to reach out to management over the issue, as I was not able to get it resolved. Conveniently, all of my services suspended, including WiFi and cellular services. I am CERTAIN that he manipulated my services, not only my mobile phone lines, but my WiFi at home. I would like this issue investigated and have communication of the outcome. There’s no way that everything just suspended. He intentionally caused an outage with ALL of my services. This is not acceptable. I spoke with another representative, who could not find a number to speak to someone about filing complaints. I was advised to come to this forum. Agents that go out of their way to make things difficult for customers, have no business working for Xfinity. I’ve been with Xfinity for several years, and this is issue needs to be addressed. I have no issue transferring to another company if not.