Porting Number taking more than 6 days

i recently got COX internet and as promised by COX , i have to get free mobile line service for 12 months .

to opt into i requested to PORT my number into COX last week. 

and the agent said it will pass through in 24 hrs. Now 5 days passed , everyday when i chat with customer service agent he/she asks to wait for another 24hrs.

No one has idea why its pending , where it got stuck.