If these telejerks called sequential numbers, and made a million calls per day, you wouldn't get called two or three times a week (in some cases per day). They work off a list.
As for DNC, "Rachael" or whatever was finally put out of business. The Feds only act after a bunch of complaints. So complain.
THIS IS UNITED AIRLINES MILEAGE REWARDS. I PROMISE! (SORRY FOR THE ALL CAPS, BUT I THINK IT WOULD BE USEFUL FOR PEOPLE TO HAVE THIS INFORMATION. I had to work with them on using mileage on a recent trip, and this number is the one I used. It may also be a survey that rang me up after I worked it out, I don't remember. But it is a legitimate call. On another subject discussed on the previous pages, regarding what to do about all these nuisance calls, I have a great program that really helps, and I love it. A friend swore by it and so I tried it. It's called PHONE TRAY PRO. It's inexpensive, easy to set up and TERRIFIC! ! I never have to do a thing except click on a bad number (which I determine by coming here to look it up, and then I block the call. I even get a choice of what I want the scammer/spammer to hear...like, a fast-busy, out of order signal, which is the one I have programmed in, .but there are probably a dozen+ other choices including a one complete with the 3 tones that precedes the real/legitimate message that : "You have reached a number that is not in working order; Please make sure you have the right number and have dialed it correctly." There are other phone-block programs available as well, and I'm sure they may be good too, but this is the one my friend recommended and even though I researched others before I got this one, this is the one that looked best, so I probably would have gotten it anyway. I have not been disappointed. (And no, I'm not with the company! :)