Dear_______,

　　I am ______ (自我介绍) .I feel bad to trouble you but I am afraid that I have to make a complaint about_____.
The reason for my dissatisfaction is _______(总体介绍). In the first place,_______(抱怨的第一个方面). In addition, ___________(抱怨的第二个方面). Under these circumstances, I find it ________ (感觉)_______(抱怨的方面给你带来的后果).

　　I appreciate it very much if you could _______(提出建议和请求), preferably ______(进一步的要求),and I would like to have this matter settled by ____(设定解决事情最后期限).

　　Thank you for your consideration and I will be looking forward to your reply.

　　Yours sincerely

　　Li Ming