I suspect it's one of the many collection agencies. People with debts often leave false numbers behind to hide their trail. And sometimes it's yours, unfortunately.
Based on the other comments this must be someone with too much time on their hands. Recd several calls from this #. Regardless of how many rings they always hang up when I answer and never leave a message if I don't.
Caller claimed to be representing the Department of Education and wanted to verify the last 4 digits of my social security number. The numbers given to verify were incorrect. I did not give the correct numbers. Person was nervous and hard to hear at times. They could not or would not tell me if it was the state or federal Department of Education. I thanked them for the call and hung up.