Personal Phone Number

I have an Xfinity (Comcast) Mobile (residential) and I requested my device and number be transferred to my Xfinity Mobile Business account. In this process Xfinity transferred the number to Xfinity Voice (landline) by mistake which was not requested.  After six weeks and over 25  hours of calling time and over 10 attempts Xfinity has been unable to port back my number to my personal or business xfinity mobile accounts.  We have attempted to escalate this to higher service reps and they have assured me in at least 6 attempts that it will be ported, being told it would take 48-72 hours and on one occasion 7-10 days to no avail.  Most of this time I have been without service and my business is suffering because I have a client based business. I have owned this number for over 25 years and Xfinity is not been able to port my number or return it back to me so I can get a different service.  All my business marketing materials would also need to be reordered if I cannot get this number back. Business revenue is being lost sue to lost calls. I have also been incurring charges on both my residential and business account for this time with NO service. What further course of action I can take to get this number back? I have also now filed an FCC complaint and BBB review. I plan to start a claim next with small claims court is this is not resolved very soon.  Thanks for your attention in this matter.  Note that I have been a very long term customer who always pays bills on time and has referred multiple customers.