Lumia 1020 :: Why Doesn't Phone Have Audio Or Volume Control

I have been having a serious issue with my Lumia 1020 there is no audio from the phone what so ever. I cant hear people when they ring and they cant hear me. The phone does not let me play music on it or play videos unless I go onto the internet and look at a youtube video but there is still no sound from it. Another issue is that when I go onto the camera app and select to take a video the phone closes its self out of the app. It does this same thing in other apps were I try to play any type of audio. There is no volume control because when the buttons are pressed a small gray strip across the top of the screen appears and goes away after a couple of seconds. Mechanically the buttons work as a have performed multiple master resets on the phone which involves using the volume down button.