Expedia OOps just kidding...you selected 18 seats on 3 flights for 3 people, but we won't tell the airline. Internet

Isn't airline travel difficult enough without adding surprises when you get to the airport?  I selected 18 seats for 3 people on 6 legs of a trip only to find out that Expedia never even told the airline what our selection was.  Evidently, they have discovered that since customers seat selections are "requested" not "reserved" they don't need to expend resources to notify the airlines anymore.  Because afterall, the airlines aren't going to honor them and the airline is going to charge you additional money to get one of their upcharged aisle and window seats.  Even though there is fine print that says "confirm with the airline" it doesn't say "we aren't going to tell the airline what you want, so pay us now and hope you get a seat" and "oh by the way, expect to pay additionally for your seat, so you probably should just book with the airline in the first place at least you only have one party to deal with".  Good luck trying to get these companies to do legitimate business.