How to get my free xFi Pods?

I received an email from Xfinity that my "Whole Home WiFi evaluation is complete" and that I have "Three xFi Pods are available to you at no extra cost". I followed the link in the email and I get to an Xfinity website that says Temporarily unavailable. I have been checking for over a month and I get the same message. 

I called and have gone through the Xfinity stores and they tell me that I must follow the link in the email. 

Is there another way to get these xFi Pods?