I had a less than stellar experience with Air France on my last flight (London/Paris/Washington and back). Nothing super huge, just lots of little things that added up. Customer service in the US was OK but here, where I actually have to file my claim (they ruined our stroller), it's been a pain. I sent a letter/claim about a month ago. Still no reply so now I'm trying to sort it out but, gee, guess what? They have no published customer service phone numbers. Nor can you email them. The only thing you can do is write or fax.
Nice for them.
Of course I won't just roll over on this. I'm hunting down unpublished phone numbers, but thought I'd post this as a warning for any potential Air France travellers... beware, you may have problems!