I have received 2 calls and they are a survey group called Peerless from Pennsylvania. I did take 2 very short surveys for them. One political and one about media. No problems and only 4 or 5 question survey. Hope this helps. You could ask them to not call you I would think.
The typical scum bags telephone terrorists.
They have no respect for the do not call list.
They are smart enough to have a name appear on caller id so that their calls are not blocked, but the name that appears is 'Name Unavailable'.
They do not leave messages, and the repeatedly call.
The world would be a better place if these people were dead.
The only way to stop people from using 800 type numbers when calling you when you are on the no call list, is to take meaningful physical action against them. Make phone companies verify ownership of the number with verified physical location and picture id's before the number is activated. Make it available to all interested parties. With physical address and id of the offending party, you have the means to enforce your Do Not Call listing.