Lost access to account during move

Please send this to a real person. Someone messed up. I scheduled my Internet service to be transferred after I moved, but the agent who helped me only put the new address account in my ex-husbands name/information without me realizing. At first I chatted with an agent in the app and got to a point where they said someone would call me. No one did. I called Xfinity and someone kindly tried to help for over an hour but couldn't fix the problem. They said they would transfer me to the mobile payment department but I was disconnected. Now all the stupid AI chat bot says is that I don't have an account anymore. I was told everything was set up for my move and now I'm stuck with no Internet. Can someone please help me?