Half-round window, anyone?

I stated in my previous post that the carpenters kind-of finished the windows. Well, the half round for the back of the house in the living room.....it's WAY TOO BIG. That's one of the more expensive windows that we purchased. We're not sure if they will take it back or not but I'm thinking that they won't. Well, other than the aggravation that Lowe's has caused, that's about the only issue we've had so I don't think we should complain!