Tired of exceptions

I'm looking for the number to CPAM. I find one, I get surprised that I only have 2 minutes waiting time, and that after a short time I actually get in contact with someone. She asks what departement, I say in the 8th, and she says, oh, but this is Bretagne. Oh, well that explains everything!
I search for the number in Paris, I search and search and search!!! When I find it after like 30 min, I call and I wait, and they say. I'm sorry CPAM is exceptionaly closed today (no reason, I was wondering if it was a holiday, but after no comments on fb, I'm thinking no...)and they follow with the phrase: CPAM is available for you monday thru friday from 8h30 to 17h....!!!! OH REALLY?! F* country of exceptions!