Wrong caller ID name is showing on my outgoing calls

I recently ported a number from Verizon to a new xfinity mobile..  The caller ID being sent is wrong, it is not my name and apparently some type of business.  This is going to cause people to not take my calls thinking it is spam.  I am told that since xfinity is an MVNO with Verizon, that the caller ID name will display as "Wireless Caller".  I could live with that but not with a wrong business name.  I have spent many hours on the phone after finally getting a person on the line who had to escalate the matter a couple of times and assured me it was being fixed and that she would call me back.  Never heard back. Still sending the wrong name! How do we fix this so the wrong caller ID is not sent on my outgoing calls!  Thanks.