I recently left them..but that number keeps calling me now.  That one and 386-944-6100 which is supposed to be them as well.  Guess they keep trying with unlimited numbers until you finally answer?

I got calls from this number but never a message.

My 14 year old daughter keeps getting calls from this number on her cell phone. Finally yesterday the guy left a message, stating he was from Comcast and to call him back. I called the number this morning and it just rings and rings.

I was having the same problem.  They didn't leave any messages, they just kept calling me. I found out that it's the Comcast cable orientation line.  If you just signed up for Comcast, they call you to help you with your services.