投訴信的目的是為了讓對方了解妳所碰到的問題，繼而提出妳對解決問題的要求與期待。因此在進行投訴信寫作的時候，就要特別註意實事求是，要簡明扼要、客觀，不要誇大其詞，小題大做。
投訴信寫作的重點在於三點
對投訴問題的提出，壹般是服務的問題或者商品質量的問題；
對投訴的主要理由的陳述；
妳對解決問題的方案和提議，甚至解決問題不利的可能後果。
文章架構
手段：自我介紹+寫作目的+引出投訴的內容
主體段落：詳細說明投訴的具體問題、投訴原因，以及妳所期待的解決方案，甚至是解決不利的可能後果等內容，要註意寫作內容要客觀、詳實
尾端：總結內容，期待盡快解決問題並期待盡快的答復。
高分範文：
Dear Sir or Madam,
As one of your regular customers,I am writing to complain about the poor quality of the electric dictionary purchased in your on-line store.
The dictionary is really of great importance in the process of my English learning. Unfortunately,I found that there are several problems.To begin with,the dictionary operated well at first,but ten days later it began to make a lot of noise when opened.Inaddition ,some of the keys on the keyboard do not work.I strongly request that you can either send me a new one or refund me in full.
I really appreciate all your assistance in this matter.If you have any problem ,don't hesitate to contact me .I am llooking forward to your reply at your earliest convenience.
Sincerely yours,
ZhangWei
精品譯文
親愛的先生或女生：
作為妳們商店的常客，我寫這封信來投訴在妳們商店購買的電子詞典太差。
電子詞典在英語學習中非常重要。但不幸的是，我發現有很多問題。首先，詞典壹開始沒問題，但是十天後開機就會有噪音。而且有些鍵不好用。我強烈要求妳們給我換壹臺新的或是給我全額退款。
我真的很感謝妳在這件事的幫助。如果妳有問題，不用猶豫和我聯系，我期待妳方便時給我回復。
閃光點剖析
voice v.表達
faulty adj.有故障的
entry n.條
pre-owened adj.二手的
defective adj.有問題的
refund v.退款
fail to 未能夠做某事
be expected to 被要求做某事
prompt reply 迅速答復
Dear_____,
①I am ______（自我介紹）. ②I feel bad to trouble you but I am afraid that I have to make a complaint about.
③The reason for my dissatisfaction is _____（總體介紹）. ④In the first place,______（抱怨的第壹個方面）. ⑤In addition, ______ （抱怨的第二個方面）. ⑥Under these circumstances, I find it_____（感覺） to _____（抱怨的方面給妳帶來的後果）.
⑦I appreciate it very much if you could _____（提出建議和請求）, preferably ______（進壹步的要求）, and I would like to have this matter settled by _____（設定解決事情最後期限）. ⑧Thank you for your consideration and I will be looking forward to your reply.