No Agents Available Through Chat

I'm trying to set up a new plan, but I can't connect to a live representative. After calling and receiving the chat link, I get an error message saying, "Live chat started. We are very sorry. No agents were available for transfer." The Xfinity assistant then replies with, "Sorry, something went wrong and I can't connect you with an agent right now. Do you want to schedule a callback?" When I choose "Schedule a callback," I receive another error: "Hmmm, it looks like something went wrong with your request. You can call 1-800-XFINITY or try chatting again later."

I've tried calling and chatting multiple times, but I still can't reach a live agent. How can I connect with an actual person to resolve this?