Comcast Business Account Website Broken

[Matt Hoppes <mattlists () rivervalleyinternet net>]

For the last two weeks we have been unable to pay any bills on the 
business Comcast website.

Clicking on any billing link results in:

400 Bad Request
Request Header Or Cookie Too Large

This is going to the URL of:
https://business.comcast.com/oauth/oauth2/authorize?client_id=comcast-business-myaccount-prod&response_type=code&redirect_uri=https%3A%2F%2Fbusiness.comcast.com%2Faccount%2Fbilling


Even trying to log out from the customer portal results in:

Sorry

Something went wrong. Please check back later.

This is going to this URL:
https://business.comcast.com/account/logout

Hoping someone on here can get this to the right people to fix.  I'm 
sure Comcast would love to get payments from their commercial customer base.