Customer service in my account

I made an original payment arrangement this week I contacted through the app to live agents to let them know that I had to change the payment date because of the holiday and the way my pay is.  Both agents told me that they had changed the date there would be no problems and my service would not be interrupted. Yesterday my service was interrupted and when I tried to get to a human again I am told through the phone that for security reasons I have to use the app. When I go into the app and XFinity assistant I can't get you a live person because it keeps saying make payment help with something else and no matter what I do it doesn't allow me to get you a live agent I need this resolved today. I did my due diligence I did let everybody know about the payment date I was told it was no problem and now I can't even get a human being I need contact as soon as possible I am so angry at this point I don't know which way to go. I work all day today two different jobs so I have no time to go to a store or anything else. Please fix this today.