Can't Add Users or View Bill Online from My Primary account

It doesn't matter how many items I try to follow ON Comcast's "help" page, I cannot view my Billing information or Add more Users to my xFinity Account. I'm getting tired of playing games with your company. Either fix the issue, or be prepared for my account to move to one of your competetors. I have been working at this for weeks thinking I just need the right combination of information. But nothing has worked. Comcast's "Help" Page is a less than helpful Circuitous vacuum for the end user.