Cannot upgrade my S22+ because I've been too loyal a customer?

Before I start this story, I want to mention that I have been a comcast customer since before 2016 (this is what my current account shows) as I have had multiple comcast accounts since around 1998. I started with Xfinity mobile when they first started offering cellphone service at $10/gig. I have kept that plan with only a few small price increases over the years, and I am very happy with it.

For the last few weeks, I have been trying to upgrade my phone, which I have done several times before. The process, including my trade works flawlessly (as always, seriously, the app is so easy to use) until I get to the last step. At this point I am met with an error message saying, "there is a technical issue and to try again later". I try later, and later and later. I try on my PC, I try on my phone, I try on another phone, but always the same issue. Finally, I go into my local Xfinity store, and I repeat the process with the staff there, and again with the store manager to the same effect. After some research the Manager informs me that my the trade in offer would require me to change my plan, but I am unwilling to do so. They then inform me that as a Platinum Member I am eligible for a $300 discount on a new phone. VICTORY! We get the phone and begin the paperwork, the $300 discount applies to my account, and we get all the way to the end where I need to sign the agreement that has just been sent to my phone....... only to discover that the discount isn't there. After more research and a little over an hour in the store we discover that the offer is contingent upon having a more expensive plan than I have. I have a fantastic plan, because I have been a ride or die xfinity mobile customer from the launch and this is how they reward us?

[Edited: Inflammatory], but I'm keeping my plan and just ordering my new phone directly from [Edited: Soliciting]. I hope this helps any of you that find yourself in the same situation.