The company is Capital Advocates Group. They do student debt consolidation. I left my info to see who they were. They called back from 310-694-5931. They claimed that the United States Department of Education is who made the first call (which is obviously a lie).
If they called your cell phone and don't have a pre-existing relationship with you, file a complaint with the FCC here
https://esupport.fcc.gov/ccmsforms/form1088.action?form_type=1088G