trying to order Xfinity Mobile, free a year promo is not applying in the shopping cart

I had Xfinity mobile account couple of years ago.

Hi @tonydong2010, I am sorry to hear that you are having troubles taking advantage of the free mobile line offering. You've come to the right place for help as you can see we have people here that ask the right questions to get to the bottom of things like @DreamSayerZ. I will need to take a closer look at your account to see get things rectified for you. Please send our team a direct message with your full name, the name listed on the account (if different), and the service address associated with your account.👍

To send a "Direct Message" to Xfinity Support: 
Click "Sign In" if necessary 
Click the "Direct Messaging" icon 
Click the "New message" (pencil and paper) icon 
The "To:" line prompts you to "Type the name of a person". Instead, type "Xfinity Support" there 
- As you are typing a drop-down list appears. Select "Xfinity Support" from that list 
- An "Xfinity Support" graphic replaces the "To:" line 
Type your message in the text area near the bottom of the window 
Press Enter to send it.