Yeah sounds like a misunderstanding.
Sometimes things work out like that and it's just meant to be.
I mean you not walking in there for the appointment at that moment might have been the best thing for the both of you discretion-wise... since there was so many eyes around.
Hopefully the both you can meet under the "congratulations" special and there will be a happy ending to this one.
Also, with regard to your declined review; don't fret, all appointments which didn't actually take place get moved here to coed so it's nothing to be supicous of.
Better luck next time to you.