How am I supposed to pay my bill when I can't log in to the website?

I would assume that XFinity would like to pay my bill every month, on time. Yet, I can't log in to their website for the second month in a row. I've manage to theoretically pay through the Assistant, which is a piece of useless garbage. And when I try to get to an agent through it, it takes multiple circles through useless prompts. How about when I type "Agent," it immediately recognizes that it is, in fact, useless, and connects me?

I'm at the point where I'm ready to just stop paying and move to a competitor.

Today was even worse than last month, where I at least got signed in once or twice, though I never could get the payment page to load. Today it just kept cycling me back to a page to enter my password, while occasionally display a screen that looked like it was a timeout warning, but was never visible long enough to read the whole thing. I managed to get to my email through the link at the top of this page, which implies that at some point at least one of my login attempts actually worked and I am in fact logged in, but despite that apparently being the case, I still can't get to any page that will actually show me billing information, most recent payments, or anything, you know, useful.

Not all of us want to use a smartphone and an app to do this with. Many of us still prefer to use our PCs that are our primary means of using the internet.