Xfinity modem update scam phone call

I received a call a few minutes ago from a male with a heavy foreign accent claiming to be a technician calling from "Xfinity Comcast" about my account and my modem. There's nothing wrong with my account and modem, and before I could hang up, the call disconnected and the person did not call back. I want to make sure this call is on record as I presume it is a scam.