Phone port disaster and no urgency to fix the issue

I have Xfinity Voice (VoIP). I decided to port my primary phone number from Ooma to Xfinity (replacing the existing number I had with Xfinity), and now I've been without a functioning phone for about a week, and I'm expecting important calls. Since the port went through, my voice service stopped functioning. I have no phone service to my modem, the Xfinity Voice website errors, the app shows nothing for Voice so that I can listen to messages left, or enable voicemail for my missed calls (if it's not already). Here's my current situation:

1. Xfinity has NO available slots for me to schedule a home tech visit.

2. Xfinity can not get my voicemail working in the meantime.

3. In my time of crisis, Xfinity has offered me new promotions on Xfinity Mobile, and Xfinity Rewards with EVERY call, and twitter DM. Thanks!!

Correction: my phone number was ported in December 1st. I've been without my primary phone for almost half a month. A support agent just told me that there are no available slots all the way to the end of February in my area.