[Edited] Billing issue with BOGO plan

@user_qe1xdj My team can definitely look into your ticket today for any updates. To send a direct message, please click on the chat icon in the top-right corner of the screen, and select "Xfinity Support" to initiate a Direct Message. 
Click "Sign In" if necessary
Click the "direct messaging" icon or https://forums.xfinity.com/direct-messaging
Click the "New message" (pencil and paper) icon
Type "Xfinity Support" in the "To:" line and select "Xfinity Support" from the drop-down list which appears. The "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

If you call enough times, Xfinity will respect your persistence and will apply 30 dollars as discount on each billing cycle. Basically, agent suggested me to call them 12 times (once every billing cycle) to get the 30 dollar credit for the line (Total 360 dollars).