Yeah try that, it has worked for me previously as there is an error in your call history not allowing it to be shown. Delete it and bam it starts showing it again.
I'm just grumpy at the Genius bar as everytime I go in to see them, they have just gone home or something. Sure I'd like to make an appointment on Tuesday, but I would like for someone to fix my shit now. Oh and I'd like a teleporter and time stopper to get into the city for this appointment whilst I'm busy at work...
RAGE!!