Pay Bill

I've been trying to pay my bill for 2 days but keep getting an error message and button to reload.  Click it, same message.  I've tried multiple web browsers, two computers, the app on my phone.  Talked to an xfinity live agent who texted me the link, same error.  Received a phone call and tried to enter card information through them, he couldn't do it.  Drove to the xfinity store, and the kiosk said it couldn't take my payment.  Are there any options or someone I can speak with to try to pay my bill?