Xfinity Phone Line Not showing up

i have Xfinity phone line from more than 1 year and it does not show on my online account from 1 year. i moved to new address and Internet line moved to new address and phone line stayed at old address. So only Internet line shows up. 

Every time i chat with an agent to move it to new address, they say they have moved to new address and wait for 15 mins to reflect and when it does not reflect , they say it may take time and close the chat.
Next time again it starts from same point explaining them 30 mins , waiting 15 mins to relogin and no updates . i havent seen my bill, usage from 1 year. Phone line works , i get billed and charged . But no visibility . 

Basically looks like Xfinity wants to hide the account the details, as it has been 20-25 chat sessions in 1 year, overcharged 6-7 times and chat agents refunded me, but it is always 40-50 mins chat time i need to spend in a month. 

I Dont see a way out of this now. Please help . 
Last case number was

332257648903543