I received a call today the volume scrolled all the way up. I thought I had a stuck key but when I pressed the on the down rocker the volume scrolled all the way down. Because the call was semi-important i had to play with the rocker to keep the volume in the middle to keep the phone from beeping when the volume scrolled all the way up or down. When I tried placing a call the same thing happened. Only after I turned it off and replaced the battery did it stop (for now?)What the heck? Has anyone encountered this issue before?