投诉信

内容：

1. 表明写信的目的，注意语言礼貌

2. 说明投诉原因

3. 提出解决方案，并希望得到满意的解决方案，再次感谢。

开头：

1. I am writing to complain about…。。

2. I am writing to express my concern/dissatisfaction/disappointment about…。。

3. I feel sorry to trouble you but I am afraid I have to make a complaint about…。。

4. I am writing to inform you that I find …… unsatisfactory

5. I wish to draw your attention to the problem/fault that ……

结尾：

1. I trust you will take my complaint seriously and ……

2. I will appreciate it very much if you could…。。

3. I would be perfectly satisfied if you can kindly……

4. I understand you will give immediately attention to this matter.

5. Please let me know what you intend to do in this matter

6. In view of the inconvenience that this has caused， I feel you should…。。

7. I would like to have this matter settled by the end of…。。