急求一封投诉信（英文） 在线等!~!~!

(右上角)Dec 20,2008
(左上角)Dear Mr.Manager:
（起一段,空两格）,I’m writing to complain about the poor quality of mobil phone in your store.I bought an SQ200 mobile phone at The First department store.The mobile phone couldn't sent message and take photos after a short time.I hope The First department store can exchange a new one with me or return me the whole money.（起一段,中偏右）Yours,（起一段,对齐上排）Wanghua