Hit '0' during the tones and chances are good that you will be connected to Sandra. It won't ring and she won't say anything until you speak first, but you might hear the calling boilerroom in the background.
Most of their operators (3 of 4 this afternoon) answer to the name Sandra. Most also hang up. Sometimes Sandra asks for Mrs. Perkins and will explain that she is calling from Sky Incorporated and that they do home remodeling in my area. One time Sandra promised that she was removing my number from their system "right now."
I phoned this number back several times. Most times it was busy, sometimes it was answered with a series of tones and then echoed whatever sound it heard from my end of the line. One time, the call was answered by a woman who asked for James Polk. When I asked what company was calling, she replied "like I'm really gonna tell you," and hung up.
LEFT NO MESSAGE ... CALLER ID 'UNAVAILABLE' ... CALLS FREQUENTLY. WE ARE ON THE 'DO NOT CALL LIST'