Last Wednesday my iPhone showed that I had a voicemail (there is no record of anyone calling at that time in my Missed Calls). When I play the voicemail there is nothing. Absolutely nothing! Not like when someone pocket dials you and you can hear background noise. Just silence! There is no end to it either so I can't delete it. I also cannot access other voicemails that came after as I am unable to skip to the next one! This sounds freaky I know but how can I delete it?