Don't know anyone in Illinois!

Received a call from this number saying my computer had  been sending warning messages. When I asked pertinent questions, the collar said, F" you!" and hung up

I never answer #s I don't recognize but as I was deleting 630 4184762 tonight I noticed I had at least 4 others from this number. I too am in the no call list. The same stuff is happening on our land line only on caller ID it shows as a local # so u might pick it up. Never anyone or anything that should be calling me.