CALLED MY CELL. NO MESSAGE

Called several times, no message. Answered it once and they asked for the owner. I told them thus is a private number and they hung up, but then called again the next day. The app I use to block spam has them flagged as suspected spam.

This number called me 11:30 am today, 12-12-14, and it came up as a "California" caller on the id.  I answered, "Hello" and all i heard was some background noise for a few seconds, then said "HELLO! " again and they just hung up.  I called the number back but the voice said i had reached the automated opt out for this number and that i had to stay on the line and press 1 to confirm that, that number had called me and then press 1 again to confirm when it would ask if my number had been called. I just hung up.

Called today 2/11/15 at 10:50 am eastern time, no message. Caller ID states from California.

Asked if I owned a business