Call History doesn't work

I signed up for Xfinity Voice a few months ago, and Call History has never worked. It only displays an error message:

"There is a problem with your Xfinity Voice service. Please call 1-800-XFINITY for assistance."

I called the number multiple times and nobody has been able to help.

I have also posted to threads on this forum for the same topic, along with sending a direct message to Xfinity Support, but nobody has replied to me. I would like help to resolve this issue, and I have sent another direct message.