I think that's why I don't celebrate Christmas... to quote Charlie Brown - it's too commercial. I have yet to walk into a store and seen a "Merry Yule" dispaly... unless it's the local stone and herb store. In my mind it's Yule not Christmas, Oster not Easter... plus a lot more. But Halloween - it's still about the same just under a different name.
And I think the clerk was more interested in quitting time than listening to what you had to say - either that or her register was bugged and was under orders from her manager to act like an idiot if someone brought it up.