英语作文 给手机专卖店写一封投诉信,日期是2012年6月17日,内容：今年五月初在你店买一个新型手机

Dear Sir
I bought the new cellphone from your company
in march and found that I can not use it after a week.So I go to repace it while two time repeace it also can't use.
Would you please check the cellphone and replace a new one for us or get a refound for this.
I hope you could deal with it as soon as possible.Your prompt reply will be highly appreciated
Sincereiy yours

Dear Sir/Madame,
I bought a mobile phone in your department store on 10th, MAY. On the following days, it is often turned off for unknown reasons. I have sent it to your store for repairs twice,...