Also, many many vendors are taking their facebook/social media very seriously these days. Post on the retailer's wall asking why they won't swap it even though it was defective. Be polite but firm, summarize in the first couple sentences (so it shows in the summaries when people open the page) but give more details in the post so people who read it don't assume you're just complaining.. (Obviously bear in mind its a public post, so leave out order #s and stuff..)