No voice service since Jan 2025

We just realized we’ve had no voice service since January. The last call that was recorded by our cordless phones was 1/25/25.

Since then, we’ve had all calls go to xfinity voicemail which we just found today in the app. We’ve missed many calls unknowingly. Today, I tried calling out from the landline, and there was no dial tone. So we’ve paid for 5 months of voice service and haven’t had it…

How do we fix this? Have gotten stuck in a loop with xfinity assistant that offers no resolution.