"SSI" is what the company "Surver Sampling International" puts in its outgoing Caller ID Name.
They have many numbers they call from, and therefore there are many complaints on this website about them.
Since scammers can spoof numbers, it is best for most people to never talk to anyone who claims to be conducting a survey.
https://en.wikipedia.org/wiki/Survey_Sampling_International
They have an opt-out page on their website :
https://www.surveysampling.com/contact/opt-out-do-not-call/
Email us at
[email protected] and include your phone number in the body of the email.
Call 1-866-360-9563 from within North America or 1-801-379-4094 outside North America to be placed on our no-contact list.