Unbelievably horrific customer experience from Xfinity Mobile!!!!

I recently transferred 5 lines over from T-Mobile on Black Friday. The promotion they were running was free iPhone 16 Pros for each line with a trade in of my iPhone 14 Pros. The Xfinity sales person had some "system issues" and challenges that night so ended up working them out and calling me back to finalize the order. After an hour or two of going through the IMEI info for all of my 5 iPhone 14 pros the order was placed. The sales person said that she had everything working out and I would get 5 new iPhone16 Pros send out. She did say that I maxed out the credit at $4500 (4 lines with a credit of $1000 and 1 line with a credit of $500). So I ended up paying $500 upfront for that 5th phone to cover the difference. 

Fast forward a week or so. We got all 5 phones shipped to us. I transfer all of the numbers over to these new phones. After confirming the new phones were all good and working I went to send in the trade-in phones (iPhone 14 pros). I noticed at that time, I was only sent one return request. Long story short, only one of the lines had $1000 credit promotion applied. Three of the lines only had a $400 credit applied with no trade-in requirements. The final line which I paid the $500 upfront for the phone actually had no promotion applied. When I noticed that issue, I spent the last 7 days and about 6 hours on the phone with customer service trying to rectify. I'm at a loss for how bad this experience has been!!!!

Here is the proposed resolution:

• Return the 4 new iPhone 16 pros phones that don't have the correct promotion applied.
• Get a temporary number activated on my old iPhone 14 pros while we return the new iPhones.
• Once the return is in their system, place a new order for 4 lines under the new promotion which is only $830 for iPhone 16 and not the pro. I can upgrade to the pro but will need to pay an additional $170 for each phone. 
• • They need to move us to a temporary number so when we place the new order, it looks like a new line. Who knows why?!?!?
• Ship the new phones and get our old numbers set up on the new phone

As you can see, this resolution option is extremely painful and requires a lot of effort only to have me pay more for what I should have received when I placed my original order. I've called customer service multiple times and they try and help but are limited because the original promotion is no longer available. So basically they are telling me I have to go through that painful process in order to end up with a worse and more costly plan. 

Is there anyone that actually has the ability to apply the promised promotion that can assist me so I don't have to return my phones and order new ones? That doesn't seem like a great option for me or for Xfinity. Is there anyone at Xfinity that can apply the promotion that was explained to me on the call when I placed the order?