I have an LG Revere 3 Flip. My voice mailbox message was recently deleted. I did not delete it and nobody else uses this phone. I re-set the greeting and left a message to test it. It works again, but prior messages are gone. How did the voice mailbox greeting and prior messages get deleted? I presume this happened on Verizon's end because I changed nothing on my phone and I've had the same phone and number for many years. The only reason I knew about is that a caller told me they couldn't leave a message. This was within the last week, as far as I know.