Xfinity Saying Phone is Unlocked but it's Locked

TLDR:
iPhone bought through Xfinity on 24 mo device plan

Phone breaks and replacement is issued by Apple in an unlocked state

Device is now paid off but Carrier "SIM locked"

Xfinity incorrectly claiming device is unlocked

Apple confirms it's locked and says original device is now unlocked

Xfinity phone agents not able to help further with unlocking of replacement device

For the past 6 days, I've been attempting to unlock my iPhone without success (shows Carrier Lock status as "SIM locked"). The original phone was purchased through Xfinity with a 24 month payment plan and thus was locked. Unfortunately, that original phone was damaged and I took the phone to the Apple store to repair the screen. During the repair, Apple was not able to restart the phone (it worked when it when in for repair), so they gave me a replacement phone. 

I walked out of the store and then called Xfinity to add a new eSIM to it. Apple has confirmed that the replacement phone was unlocked when I left the store. Xfinity subsequently locked it when I called and got it activated, which makes sense as I was still under the device payment plan. 

Fast forward over two years and it comes to my attention that the phone is locked. The device payment plan ended two or three months ago, so the phone should be unlocked. The account is in good standing and there are no unpaid off devices on it at all.

I call Xfinity support and they claim to unlock it. I wait a few hours, restart the phone repeatedly, but it still locked. I call back and they tell me I need to wait up to a week. Two separate ECM tickets are created and I get three automated emails back saying the phone has been unlocked.

On Day 6, I call Apple Support to get more information and try to solve this. Their initial solution was to reset the phone (less the eSIM) and restore the phone from a backup. Unfortunately, this was somewhat of a waste of an hour as the phone is still showing "SIM locked", but the agent did confirm that the phone is in fact locked (contrary to Xfinity's statements). She also confirmed that the replacement phone was unlocked when I left the Apple store..

Later that day, I call Xfinity again and enter into a two hour phone call in which I am told repeatedly that the phone is unlocked. They then conference in Apple Support who again confirms my position that the phone is locked. After much back and forth and talking in circles, the Apple agent investigates further and discovers that the original (damaged) phone I purchased from Xfinity is now showing as unlocked. This would appear to indicate Xfinity has unlocked the original device (which I no longer posses) instead of unlocking the device I presently have.

Various Xfinity agents have told me that they cannot unlock phones from another carrier as my present phone is showing as BYOD Bring-your-own-device. I have repeatedly explained that Apples is not in fact a carrier, to which nobody has a good answer to as though they do not understand. This results in a conversation where the Xfinity agent is telling me A) Xfinity cannot unlock my phone and B) Xfinity has unlocked my phone. Unfortunately, neither of these statements is correct.

Xfinity is also showing the phone as 256GB capacity, which is incorrect (it's a 512GB like the original phone), which makes me think the data on their end is not correct.

Apple is nearly positive there is nothing they can do and the Xfinity agents keep adding notes to an ECM ticket but that never goes anywhere. Every subsequent call to Xfinity results in more talking in circles and more agents telling me (incorrectly) that the phone is already unlocked. 

I am at my wits end as to what to do next. I need to somehow escalate this within Xfinity, but have been unable to do so. Any advice or help is much appreciated.