Wow! Really? That's crazy. I've never had an issue returning items. It's part of their policy and listed very clearly on the website. I definitely would've gotten an attitude, as well. The return policy is the appeal of Target!
This is not true for my Targets. These Targets will not accept used or opened products. I had to get an attitude with one of them about accepting an item that was made from faulty material and was not my fault. I very very rarely spend my money at Target because of this.
Sorry you had to deal with that nonsense!