Called. Left no message. Called them back from a different phone. Claimed to by SSI, an independent research firm. Yeah, Ok. Whatever. Like I have nothing else to do other than take surveys from some blind caller.
2nd time I received a call. Went to Google and typed in SSI Research in MI. Called the phone number 1-866-360-9563 and left a message to be placed on a do-not-call list. Hope it works. Decided that sending an email meant that they would have my email address and that didn't seem like a good idea.