Rexi Resale Purchase Device : Carrier SIM locked

"Hi, I'm a former Comcst employee. I no longer have access to the Courtesy Services portal, but I need assistance from Courtesy Services/XPE regarding my xfinity Mobile account. I have a iPhone 17 Pro that I've used on Xfinity Mobile for about three months, and I'm trying to move the phone to another carrier The phone still shows 'SIM Locked! I'd like my request escalated to the device unlock team or Courtesy Services to determine whether the device can be unlocked."