BlackBerry :: Phone Will Vibrate For Incoming Calls, Texts?

I have a blackberry curve 8330. The vibrate works well, but anytime I set the phone to normal or loud, it will not ring at all. I can hear the ringtones phone in the media section quite clearly but that's all. I have tried switching ringtones, I have checked all my settings, I have taken the battery out and put it back in, the phone is not on mute. I have even downloaded my own ringtone to the phone and that doesn't work either.