Comcast Xfinity Scam

I received a voicemail about a 50% discount on a monthly bill. I have received this phone call a few times and have only recently signed up for Xfinity so I was questioning the validity of the phone call. It mentioned how if I don't call the number back then I will lose my current rate. The caller sounded like a legitimate Xfinity employee yet I reverse-searched the numbers and found nothing related to Xfinity on google. 

It was [Edited: "Malicious Phone Number"].