This kind of thing may be old news for some of you. It's the first time for me.
My house telephone rang today and it indicated the call was coming from itself, i.e. my telephone number was displayed on the phones little window. A few seconds later the phone rang again; this time the display indicated the call was from my wife's cell phone, which was innocently lying on the table next to me.
The Time Warner representative I contacted about the incident said it was hucksters using software to try to get me to answer my telephone. What they would do next I don't know.