sosafan, your experience reflects the ambiguity between booking class and cabin class. Y being the main culprit because it is used to describe coach class in general, the coach cabin on the plane, coach booking class in general, and also the more specific Y full fare booking class. "Yes, you're in Y class," can mean "Yes, you're in economy class" or "You're in the economy cabin" or "Your ticket is a full fare coach class ticket."

It's a farce. All I know is when it's someone else's dime, Y,C, and F are cool. When the $$$ comes from my wallet, W,V,Q,M, and H are much more attractive.