Who called from 4048915615

Unknown caller. No one ever came on the line, no recording, nothing. Just rang, played music for a second and then disconnected.

Atlanta, George came up on caller ID.  Picked up on 2nd ring...no one there.

Same here. Unknown caller. No one ever came on the line, no recording, nothing. Just rang, played music for a second and then disconnected.

Now, I am getting calls from the same company (NAD) but from different cell phones out of Florida with a 305 area code. Sounds flaky to me.