ORIGINAL: bchapman
It sounds like what happened was that the package didn't get delivered to the correct address in China at first. By the time it did, you had already ordered another one. The deal was for you to send in the old one and they would send you a new one. That and your many e-mail demands pissed them off and they didn't want to give you anything then. You could tell in that first e-mail they send you, even with the broken English. To them, it is a lot cheaper to just replace your broken unit with a new one. However, for them to just refund your money for one purchased at full retail or whatever selling price they are using costs them much more than it cost them to produce. This makes sense from the stand point of a manufacturer in business. That's why you got the response you did, in my opinion.

They sound like a pretty good company to me actually. Next time I would just give it a little more time before you go off the handle. I always find that if I'm extra nice, even if it seems a little much, I get the best results in the end.