I have had similar bizzare experiences with my iPhone the past few months.
The most recent one being the weirdest where my phone rang at work, I answered it but there was a silence, I repeat "Hello?" and then I hear myself on the other end asking "How can I help you?"... I freaked out and put the phone down.
I am scientific and analytical by nature so I try to find a logical answer first. In my case I put the blame on my network provider being useless and crossing lines with other iPhone users hence I have situations where someone calls me and then asks why I called them
Adios


