Got a strange phone call from Xfinity about router?

So I got a weird call from a verified Xfinity number. I was driving and he asked if (verified account holder was there) I said speaking he asked if I was near my computer and router, I said I'm driving I said what is this about?  He said when will you get home, I again asked what is this about?  He again asked when will you be home?  I said 1st tell me what this is about?  He then said I will make sure you have no internet when you get home and hung up on me?  I called the number back and it was Xfinity!!  I tried and tried to get to a human but could not.  What [Edited: "Language"] is going on?  (I own my own Netgear Wifi 6 modem/router, works great)