Who called from 4168479850

Getting an "Ontario Call" on my home phone. Don't know anyone there. Must be a telemarketer or non-profit.

Ontario Call on ID.
No answer. I tried calling back and got a "disconnected phone" type sound on the receiver.

I actually picked up becusae I was getting called every 30 minutes...   there was a person on the other end, and when I mentioned that we are on the NO CALL list I was very rudely told.."There is no such thing as a NO CALL list."   I said I want to be taken off your list, and this same person yelled at me and said he couldn't take care of that and hung up.    How do I get them to stop?

evening calls when I answer no one is there , I am on a do not call list

This phone number repeatedly shows up on my caller ID. Sometimes 3+ times per day. I would love to know what it is.