New modem does not allow phone calls to be made and all calls to us go directly to voicemail

I have the same problem.  I just installed the new gateway and now there is no dial tone on landline.  All incoming calls go directly to voicemail.  I've reset the gateway.  The phone is connected directly to the gateway, so it is not house wiring.  I have confirmed phone connections on the gateway are applied correctly to the telephone port, applying them exactly the way they were in the old gateway and as per new instructions.  Television and Internet are working.  I have rebooted the gateway, and it did not solve any problems.  I cannot be down for days like so many of your other customers are experiencing.  I hope you can see how concerning this is.  The remote technician rebooted the gateway and said the television and internet services are working.  I told him a third time it is the voice (telephone service).  This is a KNOWN ongoing problem.  Why did they send out broken gateways?  Does anyone know if there is a class-action law suit over this?

Hello @Lou-Toni, Thanks so much for taking a moment out of your day to leave a post on our community forum and we would be happy to help. If you could send our team a direct message with your full name, the name listed on the account (if different), and the service address associated with your account, I'd be more than happy to look into this for you. To send a Direct Message, please click on the chat icon in the top-right corner of the screen, next to the bell icon, and then type or select "Xfinity Support" to initiate a direct message.