SSI has many numbers they can call from. There are many reports on 800notes about those numbers.
https://en.wikipedia.org/wiki/Survey_Sampling_International
They have a webpage that describes how to opt out of all calls made by their business :
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.