I receive 3 calls on my office land line, no message if you don't answer. The caller ID says "Ind Sur Grop" as reported by others. If you call the number, you get the reported message about political survey.... and a menu option to have your number removed from the list. Apparently, that does not really happen. I have selected the option twice. Each time I get a recorded message that my number will be "permanently removed" from the list, but that is apparently not true. I have filed a complaint with the National Do Not Call list, but I doubt that it will do any good.
I'm in Ohio. Caller ID only shows the number. Did not answer and no message left. Also on the Do Not Call list but get dozens of these kinds of calls weekly. I don't answer them. Reporting them does no good. DNC list officials are unresponsive and the callers know they are above the law.