I just bought a Hyundai and was told by the dealer to expect a call about th service I received. Probably the best way to handle it would be just to answer once and ask that they don't call back. Most reputable companies will accept that.
It's a company called Synovate calling "on behalf" of Hyundai to do a telephone survey. I recently had my vehicle serviced and they call supposedly regarding how the service went.
I received the first call a few days after the service and did not answer because I did not know who it was. They did not leave a message.
They called again today and I answered. I let the guy get about a sentence and a half out and advised him that I am on the Do Not Call list and that this was an un-solicited call, and for their company to stop contacting me immediately.
I filed a complaint via www.donotcall.gov and called 866-320-4607 to be placed on Synovate's own do not call list. I would suggest anyone to do the same if they receive calls from this company. If you simply ignore them, they will continue to call you!