Galaxy S25 - getting not supported error

Contacted Xfinity to get bundle of Internet and Mobile.  Gave them my IMEI for my Galaxy S25, and said it needed to be unlocked.  It was already unlocked (paid for in Jan 2025) and verified by current carrier.  However, after 2 days of trying to get resolved, and 4+ hours on support chat on 9/20/2026, I was told the phone was not compatible, could not be transferred, and I would have to buy a new phone from Xfinity.  I see numerous people are having this problem, so its definitely an Xfinity INTERNAL ISSUE.   Forums says the IMEI can be added to their database and can be transferred.  Without spending another hour, day, week on messaging to get this fixed, can you help resolve, as you've done for others.  Otherwise, I'll return the internet gateway and go with another provider for internet and mobile.  Thank you.