Incorrect Zip Code

I have been trying to port my number out of Xfinity Mobile. However, I keep getting an error saying that I have the wrong zip code. I have double checked online and with an xfinity agent that the zip code is correct. I have also tried all previous zip codes it could have been.

I asked the chat agent the phone number to contact the porting department and was given a phone number for a different company. I asked for the real one and they disconnected the chat.