I received several Comcast Xfinity scam calls and voicemails from 800-934-6489. Recorded messages said they were COMCAST XFINITY and to call them back at the same number because today is the final day for my 50% discount on my bill. I called back and talked to a man who told me about a 3-year promotion. He said if I paid $600 today that would take off the first 2 years after $50 each month. I told him I would call him back because I wanted to research the telephone number 800.934.6489. I found out it was a SCAM.
The Comcast Xfinity Scam Call

"Hello this voicemail is from Comcast Xfinity your current 50% discount on your monthly bill will expire by the end of the day to maintain your reduced rate call the number on your caller ID immediately this is your final reminder to act call back now thank you..."