Nobody seems to have any idea who these people are. We certainly don't know that they're making "survey calls" and so are exempt from the DNC list. I've gotten dozens of "survey calls" aimed at selling me a vacation, a freezer, stuff to go into that freezer, and so on. Cut the criticism, already, and stop being so naive. "Ticked off" probably has the right of it: It's someone trying to get your personal information. Google says there's no such organization as "Survey Sampling," in Utah or anywhere else, so these people lie from the start. Does anyone really think this is a good sign?
How "they can do" what? Here is the FTC FAQ page which the DNCR site repeatedly invited you to read before you registered your numbers. Please note that non-sales callers are exempt.
National Do Not Call Registry Q&A
http://www.consumer.ftc.gov/articles/0108-national-do-not-call-registry