They say nothing but continually call my phone !!! It's very annoying

called at 8:00 am, no message

next-time;;;; tell 'em to wait & put the phone-down on desk & let it sit-there for 5-10 minutes.... IT WILL CO$T THEM $OME-BUCK$,,,,,, --OR-- BLOW 1 OF THOSE BOAT-  a i r -- 'HORNS' into the phone.

"next-time;;;; tell 'em to wait & put the phone-down on desk & let it sit-there for 5-10 minutes.... IT WILL CO$T THEM $OME-BUCK$,"  Sorry but the days of paying by the minute for long distance have long gone.  The broadcast over the internet for next to nothing now.
"--OR-- BLOW 1 OF THOSE BOAT-  a i r -- 'HORNS' into the phone,,,,,"  Another urban myth since phone lines do not transmit the noise you hear on your end.  However keep doing it and you will quickly become a candidate for a hearing aid.
As far as your link, just because you C & P the same post there does not make anything you say legitimate.

Called 7:00PM - no message, was not home 555 portion of number is dead givaway.