This is quite bizarre. But hey, we've got to get you back up and running so you can actually start hearing your ringtones and notifications again. And I've got just the tools to help out.
Of course, I appreciate you having maxed out the volume and checking ringtones which would have been the first step. Next, we'll want to proceed with a soft reset (simply turn phone off) and pulling of the battery. When that's complete, power back on your phone and give it a shot. If it still doesn't want to comply, we'll need to go forth with a hard reset http://vz.to/rlYXKN . Be sure to backup your information first so we don't lose anything. Please try, retest, and keep us updated. I appreciate your understanding.
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