Paint mixed wrong
 

wrong Valspar paint mixed by Lowe's, what can I do?

If it were me I'd take it back and have them do it right this time...unless I liked the color, in which case i would use it. :)

If it was the store that made the mistake I'm sure they will mix you up the correct color or sheen.

They may even replace it even if it wasn't their fault. All you can do is ask.