Blast from the past - Visual Voicemail on iPhone gone crazy!

Can somebody tell me how this is at all possible? My visual voicemail is exploding with the following:





To make it even more strange, these voicemail are dated 1st January, 1970!:





How on earth is this possible?

Is it Dr Who?

Someone messaging me through time? Across the space-time continuum?
From an alternate reality?

The funny thing is these messages don't play either.

I wonder what it is?!

-- Post From My iPhone