Three questions with itunes or Music

1) on iphone, even though I only use it with my own music I upload, that I see some dynamic stuff on home screen. Is Music/itunes going online? Is this costing / using data? Anyway to shut that off?
2) I have playlist, and they all seem to disappear eventually, It's like itunes can't get them to stick there more than few days. Any theory why they keep getting knocked off to default? Frustrating. Have go back to library, select playlist and find where you were.
3) in car, when I plug into Alpine receiver, I itunes on pause, and even when I do to do anything, play CD or play through another app, itunes release to play, even though I did not choose to play, anyway to control that? thanks.