Who called from 9089560479

i called back the phone because the name was a doctor i had used when i was expecting 30 years ago. it was an foreigner selling solar something. hung up real fast. best part when i called the number back he answered the phone and  called me by my first name. how do they get this information?

Showed a doctor's name i did not know. Did not answer. Hung up after 3 rings.