While I was in Europe last week roaming on other networks, my entire inbox was deleted on my Blackberry Z10 - e-mails, call logs, texts, and my visual voicemails.  All of my visual voicemails were saved going back several years - specifically messages from my deceased grandmother and my little one singing happy birthday to himself.  Is there any way to retrieve them?  I've called *86 and it says I have no messages, not even saved messages.