急求一封投诉信英文作文。注意信函格式！
Manager Li HuaThe First Department Store Dec 24, 2009 Dear Manager I bought a mobile phone from your store. The model is SQ200. But when I try it, I found out that it didn't function, such as it can not take picture, can not send and receive SMS etc. I want to find a solution on this, either I return it back or get it replaced. I am looking forward to your early reply. Wang Hua December 24, 2009亲爱的经理我在你的商店买了一部手机，型号是SQ200，但我试用时，我发现它不能正常工作，如不能拍照、不能接收和发送短信、等等。我想要找到一个解决办法，退货或者换货。期待你的尽早回复。王华2009年12月24日
