Originally Posted by
Often1
You have to separate the two issues...
This. OP's complaint hopelessly commingles the king-bed preference with the issue of the rude, lying employee. The screwup on the first is the very definition of a first-world problem; it won't kill most of us to sleep in a double instead of a king. Preferences on record (aisle seat, king bed, full-size rental car) get scrambled or go undelivered all the time; they are called "preferences," not "requirements" or "promises," for good reasons.
A jerk of a desk clerk is a different story and while I would not walk out over such a thing, I would have a word with the manager, make clear why I'm not bringing future business to the property, and blow up the post-stay corporate survey.