I going to go off on tangent....
I used to sell my stuff through amazon. I just wanted to get rid of a few things and it was easier than opening a new account through ebay.
Anyhow, Amazon had this annoying habit of sending e-mails about problems when they were fixed. They did this when stuff mostly when I purchased straight from them: sent a "product has been back ordered" e-mail after the product was back in stock and about to be shipped.
The major problem happened when Amazon sent me an e-mail that the buyer's payment process had a problem, and they were waiting for the buyer to update and fix. What they meant to say was that there was a problem and it had been fixed.
So I'd be waiting for Amazon or the buyer to contact me as to the fix which never came. Finally the buyer contacts me as to where the hell the item was. I replied immediately that I received their purchase order but I had received an e-mail from Amazon saying that there was a problem with payment and was waiting to hear that it was fixed.
After several back and forth e-mails with Amazon (I may have even called; can't remember), I find that the e-mail was meant to prove that the problem was fixed. Argh. Anyhow it all got squared away in the end, but I turned me off from selling through amazon again. I did learn to send e-mails to buyers with every e-mail I received from Amazon.