Answered but no one was there, just silence.

This number came up as SSI on my caller ID. They did not leave a message.

A simple web search would have told you this:

Survey Sampling International:
SSI is Survey Sampling International, a survey company and has nothing to do with the SSI program by the Social Security Administration, nor 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.