New Gateway and New X-Fi Pods and Pods still won't connect to new Gateway

Received a new gateway at Xfinity's suggestion. First 2 days were spent trying to connect existing X-Fi Pod to the new gateway. Then they sent me a new X-Fi Pod and it won't connect. Can't connect via Xfinity app \nd tech support cannot activate it remotely.

The true insult is when, at the end of each call (it takes an act of God to speak with a live human being), they try to sell me Xfinity mobile service, apparently not realizing that asking me such a question flies in the face of them not being able to fully execute a new Gateway installation correctly.

They even sent a technician out to fix the Pod, and he had no idea what to do.

Terrible!