商務英語寫作范文:對商品質量不滿，要求補救

Dear Sir,

　　On 5th October I bought one of your expensive“Apollo”fountain pens from Julian’s,a big department store of this town.Unfortunately I have been unable to use the pen because it leaks and fails to write without making blots.I am very disappointed with my purchase.? On the advice of Julian’s manager I am returning the pen to you and enclose it with this letter for correction of the fault.

　　Please arrange for the pen to be fixed or replace it with a new one and send it to me as soon as possible.?　　

　　Yours,Mary