Hello, njmc61! Welcome to the Xfinity Forums. This is definitely the best place for these kinds of questions! I see it has been a few days since you created this thread and I wanted to check to see if you were able to get that pod returned or if you still need some help?
The lack of email confirmation may be due to how long you've had the pod. You'll need to return your xFi Pods within 30 days to receive a full refund; however, xFi Pods can be exchanged within one year under the hardware warranty