[wvguy]

If you understand how paint is made you understand that when paint is formulated in usually 2000 gallon batches. Paint is tested multiple times per batch. When someone has a problem with a paint its very very common to yell bad batch. The truth is bad batches rarely occur. Plus remember the grade of paint sold to walmart is lower quality than others carry. Thus the cheap price most under 13bucks a gallon. A good quality paint should cost u around 16-22 bucks a gallon. The inexpensive stuff that is mad for Walmart is not Glidden its Sherwin Williams and Valspar.
Yes return the paint they will take care of you but consider getting higher quality paint from another retailer such as Lowes or Home Depot.