Urgent carrier unlock

*reposted new title for visibility*

I recently replaced my device through assurant insurance. The original device was unlocked, one payment remaining on balance. I got new device, switched over, sent old to assurant. I paid the remaining balance. Then I needed to temporarily switch phone carrier, believing my device unlocked I ported out, and that bricked my phone (network service inaccessible from anyone including xfinity) for several days. I have since spoken to no less than nine xfinity agents at different levels, had 2 support tickets opened and closed, and all the while being told my phone is actually unlocked and its fine. It shows network locked on the device, I ultimately got the IMEI updated in the system (I think) by allowing an agent to enroll me on a promotional free line plan ($25 activation fee) even though I had just paid my bill, but even with the current imei matching their system, no unlock commands are going through to my Samsung s25 ultra assurant replacement device. This has become a nightmare trying to simply get the paid off device legitimately unlocked, can someone please help me escalate this? I have had 3 agents send the unlock signal and promise its fixed, 2 assure me there was never a problem at all, 2 more send it to technical support tickets that were then marked as completed/closed with nothing solved, and 2 simply disconnect after explaining this whole thing to them. I have plenty of screenshots, transcripts...Send a lifeline here!