Lines have disappeared from account and can't be located by anybody

Has anyone else been through this/found a resolution?

A couple months ago I moved out from my roommates' house and thought I had transferred my line back to my own account from our joint acct. A random day in July I received an email that my mobile line was deactivated. I went through the steps with Xfinity in store to reactivate that account and we tried to move my mobile line back to my own account- but they were unsuccessful.

I had contacted support through chat quite a few times and each time they had told me that they had successfully transferred my line back to my own account, but it never appeared. About a month ago I tried one more time and the agent said she was successful in transferring my line, and that the old account no longer showed any active lines. She said my line would appear on my account within 24-72hrs, and but it never worked. Not only did this not work, my partner's line ended up disappearing from our account and now my account says there are no mobile lines active.

I have gone in store countless times and have been told every time that they have put in requests with higher tiers and would be contacted when they have resolved the issue. Every time I try to reach back out, I am ignored. I am extremely frustrated and have no idea what to do now. My lines both work, but nobody can seem to locate where they are and what address they are now attatched to. I worry that some random day I am no longer going to be able to have access to my line at all and will lose service completely. I have had this number for 10 years and it's attatched to everything I own- otherwise I would've completed abandoned the line and opened a new one through a different provider.

I am writing here as a final resort before I finally throw the towel in- I am hoping somebody from hire up will read this and finally help me resolve this once and for all.

Has anybody else encounter an issue like this, and how have you or a rep been able to resolve this???