Received call on 10/22/2013, sound like someone using a voicebox or computer voice. Stated was a survey company and asked for Shawndra Grey, I told them wrong number and they said thank you and hung up. This was the first of these calls for me, but wanted to post since it is happing to others. Also, I'm in the western part of Texas.

I found this on their website:

We appreciate your participation in our research and we value your opinion. But if you do not want to participate in the future, we of course understand and respect your decision. To opt-out, please email us at optout@surveysampling.com (please include the phone number in the body of the email) or call 866-360-9563 to be placed on our no-contact list. If you would like to speak to someone about the call you received, you may contact us toll-free at 866-360-9678.

The name of the company is called SSI.  They are a survey research organization (so they say).

Got a call from 3852077056.  Did not answer.  I am in Puerto Rico