S23 phone is locked that cae say it unlocked

I have an s23 ultra that was purchased thru rexi resale (I was an xfinity employee then) so the device was always paid off, no past bill and the phone was activated over a year. Everything i call they say the phone is unlocked. I've visited stores, had 4 separate tickets created and the phone is still locked. When I go into the store they see and acknowledge it is because they can't activate it either. I have tried xfinity mobile, visible and verizon.  I have screenshots that show. They say they can't unlock it because they couldn't find the purchase number when as recently as 2 weeks ago it was active on xfinity mobile.  Since I no longer have access to my old company email I can't get the purchase number.. is there another work around that anyone knows??