Number is transferred to new iPhone but old iPhone still shows SIM locked

Thank you for reaching out to our team about that unlock issue. I will be happy to assist you with that. In order for me to do that I will have to ask you to send me a direct message with the full name and complete address for your service. To send a direct message. 

 Click "Sign In" if necessary

• Click the "Direct Message” icon (upper right corner of this page)
• Click the "New message" (pencil and paper) icon
• Type "Xfinity Support" in the to line and select "Xfinity Support" from the drop-down list
• Type your message in the text area near the bottom of the window
• Press Enter to send your message

  How to: Direct messaging within the forum | Xfinity Community Forum