Keeps calling but on the one call that I answered there was no one there and then the line hung up. SMS Research is a legitimate company in Hawaii. They often do the polling for politicos. link: http://www.smshawaii.com
Got 2 calls within 3 days from this number. Answered the second time and they said it was like sm3 marketing survey or some such. Told them to stop calling me, not interested. Hope that does the trick