Can I speak to a person??? Can't change router settings.

The Xfinity Assistant is absolutely worthless; it just constantly sends you in a circle and refuses to connect you with an agent. The phone number (1-800-934-6489) is absolutely worthless and refuses to connect you with an agent. And apparently you can only submit tickets if it's related to billing??? 

I am in my router and I'm trying to make changes to my Wi-Fi settings. Specifically, I need to change the Wi-Fi channel settings and SSIDs, but I get the following message:

Wi-Fi Mode, Security Mode, Channel Selection, Channel Mode, and Channel Bandwidth are being managed automatically to help optimize your home Wi-Fi network and improve Wi-Fi coverage. To edit your Wi-Fi Network Name & Network password, please download the Xfinity xFi app.

I cannot find where in this app where I can change the respective settings, and the page on the website (https://customer.xfinity.com/settings/wifi) doesn't allow me to change what I need.