survey scammer

Victim Location 23228

Type of a scam Other

This phone number had called 2 times already in the past week, so I answered it the 3rd time. I cannot remember the business name, but the lady on the phone knew my name and said she was conducting a survey about my recent hospital visit, and started by confirming my discharge date. She said "on or about Sept 25." I said, "That’s correct ." She said, "Is that a yes?" I said "Yea." She replied, "So I can confirm that as a yes?" I hung up. I don’t know how she had my info. I do not post on social media and I shred my mail. How did she know I was at the hospital 3 weeks ago? *** ***