Email and phone call scam.

The email I got was offering a free WI Fi pod extender from xfinity. I called a number that I got off of a search because no phone numbers are available on the website or on the app. That's when it went bad and I had to do some credit card magic. Maybe they should fix that and make a phone number available instead of making you go through their  assistant that runs you around in circles. I'm not sure but I think I verified that there is an offer.