It just sucks to pay more money to get what I shoulve got.
Ahh, that age old attitude. I've seen it and used it myself plenty of times. Sometime the fastest solution is to just suck it up and fix it yourself. Especially in this case when you'd be out a gun for likely close to a month, assuming they did take it back, for just a blemish. A wise guy might say you should have inspected it before taking possession.
Your call either way.