I recieved a voicemail this morning and the icon showed up in my notification bar at the top. I listened to message and then deleted it and hung up. Typically when I do this the icon will disappear from notification bar and all is good. Not this time! Icon will not disappear. I've tried everything I know of, up to and including a battery pull, but icon is still there! How do I get rid of it. It's starting to annoy the hell out of me. TIA.