Caller ID showed this number and "SSI." Didn't answer; no idea who that is. Left no message.

Called Saturday 12/10/16 evening a little after 8:00 CST. Caller ID: SSI. Did not answer. No one here on SSI. Suspecious.

didn't leave msg

You know it's a scam when teh caller ID shows SSI. Why else would you use that name except to trying to trick some poor old person into giving you information.

Or maybe that is the company name?
Survey Sampling International:
SSI is Survey Sampling International, a survey company and had nothing to do with the SSI program by the Social Security Administration, not does it have anything to do with the Administration itself..  Opt out:  https://www.surveysampling.com/contact/
I don’t personally know if the above link will actually take you off their list, but I have been told a couple of times that it does work.