Most unproductive day ever

So I had work yesterday and that turned out to be a waste of a day. Normally I wouldn't mind getting paid for doing nothing, but this time I worked so hard to do nothing. As a matter of fact, I went beyond being unproductive; I was destructive. And I blame my manager for that.

So our company has store-wide layouts for each shelf by category. They only differ depending on the size of the store and how many shelves are available for a certain category. I was assigned to update price tags, and if anything gets moved on the shelf to a different location I would take care of that as well. Normally only the prices are changed, if they even change.

Not this time. Everything was changed. The price tags had to be changed either way, but I was not prepared to move the products around. For 5 hours I stripped the shelves bare, painstakingly took out each peg and repositioned them, put the products back on the shelves, and then the manager who told me to do it said "oh this is the wrong one."

"Well can we just leave it as is? I'm almost done."

"Of course not. Put everything back."

I started putting it back, but I didn't finish, and I didn't stick around overtime to get it done. It's not my fault I got the wrong layout.