I have the same problem. I bought an iPhone when I signed up with Xfinity mobile at the end of November. I was promised the $500 prepaid Visa card within 16 weeks. It's now been 21 weeks. I appreciate other people sharing their experiences.
No card. No surprise. Broken promise.
DrObbie, thanks for reaching out. Let's check the status of your card. Please send me a private message with your full name and phone number tied to your residential services for help.