call from social security to say work at home part time was available on a part time basis at 9.00 per hour 20 hours per week

The call I received from this number claimed not to be the Social security dept....rather an independant org.  So where did they get my number?  From the Social Security office?  The fact that I'm on SSI should be private information..........just curious, do you get social security benefits?  If not, then maybe my suspicion that the Social security office gave out my personal info might be wrong.  I wondered too, if these people might be trying to obtain social security numbers for some illegal use...since some people might conclude the caller was from the social security office.

I received a call from 617-933-8413.  They left no message and when i call back it rings for long time then dumps me in to a voice mailbox that has no description of who they are or why they called.  I would say this is a scam caller.