Request for Assistance: Equipment Billing Issue on Active Account

Hi there,
I am reaching out to see if someone might be able to assist me with a specific equipment billing issue on my account. As a former Xfinity employee, I really appreciate the service and am incredibly happy with my current core services, but I’ve hit a wall regarding a line item for a piece of equipment I no longer have.
Account Details:
I am currently still paying off an iPhone 16 Plus on my mobile plan, despite the device and line being deactivated a long time ago. During a difficult separation, my ex-spouse took the device without my consent and traded it in to another carrier.
Because the phone was spitefully taken, I have been stuck paying the remaining balance on a device I have absolutely no access to. I completely understand standard policy regarding device payment plans, but given the circumstances—and the fact that I remain a loyal, high-paying customer for my core services—I wanted to see if there is any flexibility or any path toward getting the remaining balance waived.
It has been a frustrating financial reminder of a tough personal situation, and any help or review your team could provide would be greatly appreciated.
Thank you for your time and assistance!