I called them back and it is some crap about job or education.... Told them to take me off list and that I wasn't interested, but they kept going on with their pitch. I hung up while they were still talking. I then blocked the number.
This is a job offer pitch. I returned the call from a prepaid cellular phone. This is how I check all the "unknown" phone numbers so that I can block them on my home phone and forward them to the FCC, my local police department, and FBI. No one should be harassed at home by people that they do not know.