An unidentified person called me from this number saying, "May I speak to Patti ______?" (my name) then, "This is disability, calling for Patti _______. What is your mother's maiden name?" This was an unexpected call regarding what I assumed was closed matter (my recent ss disability denial about which I received a letter and I said so.to the caller. ) The lady then said "That must be another claim." Will you verify the last four of you SS number?" and she proceeded to tell me the correct last four numbers. I was very confused about she was, what company or entity she belonged to or what exactly she was calling about. She did not answer any of my questions and continued to try and get me to verify sensitive personal information.I explained that folks should not share such information with people who call them unexpectedly and that I wish to verify her identity. The caller said nothing, so I ended the call with, "I will call social security and see if this is connected." and hung up. This was a very strange phone call and seems very fishy to me. I have been unable to verify anything with Social Security and still have no idea who this person was or why they called me.