To be fair, no one reading here has a full account of every conversation, explanation, etc. that Doctor Gonzo has gone through with this seller. I'd like to give him the benefit of the doubt on whether the seller deserves a negative review, or on the flip side of the coin, if future buyers should be warned that their experiences with the seller might not be good.
Which isn't to say that those who disagree with him are wrong. They could well be right. I'm just not sure it's possible, in a forum like this, to get enough of the story without DG having to spend way too much of his time writing down all his interactions.
Angie's List is not used enough in my area to be a super-useful venue, but Doctor Gonzo, maybe it is in yours.