Porting out my Mobil number

I have been on the phone with over 10 Xfinity customer service representatives, multiple agents have hung up on us. 
we haven’t gotten no where in three days…. 
all we need is the release of this last phone number. Xfinity has literally given us every excuse in the book. No answers. And they fight with the Verizon rep trying to help us. 
Xfinity is a complete disgrace and we have had NOTHING but trouble with their mobile service for the last 4 years.

xfinity you are complete disgrace