Retrieval of account phone numbers

On May 15 2026 Xfinity unilaterally cancelled my and my wife’s phone numbers which we have had for over 10 years.  There was no reason.  Despite being  told it was a mistake perhaps due to Xfinity system migrations  Xfinity told us they can’t find our numbers.  We have spent untold hours with Customer service with more than 5 tickets — each closed without resolution.  We have been to the local Xfinity store 3 times —they say they can’t do anything.  This is unacceptable.   All our contacts, health care providers, and family and friends contact us through our phone numbers, our 2 factor id uses our phone number and can’t be changed without our phone number.  What is. Finite going to do to make this right?