I received a call from this number on my cell phone. I answered the call. The caller said they were from SSA and needed to verify information that had been submitted. Without thinking, I went over the information with them. They called because of a discrepancy in my work history. We verified the information. I wasn't even thinking about it being a Saturday. I googled the number and I saw everything about this being a scam. I received a copy of the paperwork today which they said I would be receiving to retain for my records. This number is from the Workload Support Unit, Social Security Administration, Mid-America Program Service Center, PO Box 15368, Kansas City, MO 64106. "Tolerances allow for slight variations that do not affect the outcome of the subsidy level determination. In the verification process, the field office (FO) or Workload Support Unit (WSU) contacts the applicant to resolve the discrepancies between the application data and the agency data. * Make two attempts to contact the applicant by telephone at different times of the day to increase the chances for making contact. Document each attempt on the Verification screen in the Report of Contact section per HI 03035.006D.2." https://secure.ssa.gov/poms.nsf/lnx/0603035006