Caller is a scammer.
Do NOT give them anything but a free ride to the nearest prison.
The caller said there was a legal issue with my ss account and needed my ssn to continue the interview. I hung up went to the phone log and called the number reaching an individual who immediately asked why I was calling back if I didn't have a ssn. I told him thanks just wanted a name before I called the police, he hung up.
This # called my mobile, left no message. Has same first six digits as my mobile.