Now I'm not surprised that Valve got a bad overall rating, but the lowest rating for customer service seems odd (I've only ever had an issue twice, one of which was because of something I had done wrong and another being third party related problems).
But what I'm scratching my head about is how Valve got an F, but somehow Walmart got an A and Comcast got a B. Now I've never dealt with Comcast (though is someone has something good to say, it would be the first I've herd) but Walmart is not an A for customer service, it's not even passable.
So I have to wonder, how does the Better Business Bureau rate customer service?