My ppc is having a ringer issue. I am missing calls and realized my phone wasnt ringing. So I raise the volume via the volume button on the side of the phone and the ringer is turned all the way down. I turn it up thinking it was gonna ring and still nothing. I attempt to go back to the volume setting AND ITS ALL THE WAY DOWN AGAIN! Note: I didnt turn it down manually. It just goes down on its own the moment the volume setting window closes.

Plz help!