Voice Portal Doesn’t Show Anything

I’m trying to check my call history and it says to log in the voice portal.  I do that and it doesn’t show any of the features it is supposed to.    There is just an informational text bubble and a link to “learn more about Xfinity voice”. When I click that it says “blocked by policy”.  I really need my call history from early January to prove a credit card dispute.  This is on my landline, but mobile.   Can anyone help?