Called every 15 min. dueing  the day, no message

This is the third call in three days from three different numbers that all say SSI. I asked this lady, ( with a heavy accent of course) who they are, and all she kept saying was yes. I asked her what is the name of your company and she said they are a survey company. I told her to take me off thier internal call list, like legally that is suppose to help, not that it ever has and I then I blocked them. What is going on with this new scam I wonder?

Caller ID says SSI, but contacted at 6pm from Crockett  Ca. Blocked