Switched to Xfinity Mobile 2 months ago and had nothing but problems

I have contacted Xfinity numerous times by phone and by the virtual assistant. I have had nothing but problems since I switched to Xfinity Mobile and can't seem to get ahold of anyone that can actually fix my problems. Here are the issues I have:

1. The person setting up my account when I switched put in the wrong phone number to port in. Spent 3 days back and forth with you and T-Mobile, each blaming the other, just to find out that my number was put in wrong. According to my account, I have yet to activate my line. My line is active and is on the Xfinity Mobile network. 

2. I have yet to get my trade in promo for my iPhone 13 Pro Max.

3. I signed up for the "Buy one line, get one line free for a year" promo but am paying full price for 2 lines. 

Ultimately, I have been very disappointed in your customer support. It is nearly impossible to find a phone number to call, let alone a human to talk to. I keep getting reassured by the agent that they will resolve my issue but have had nothing but problems. All I want is to talk to someone that is a US based customer service agent to resolve this. None of the people I have talked to seem to comprehend the issues with my account.