開頭：

我寫這封信來申訴。。。

I am writing this letter to express my complaint against。。。

I feel sorry to trouble you but I am afraid that I have to make a complaint about…

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

I am most reluctant to complain， but…

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

結尾：

我強烈要求。。。採取有效的措施來解決問題。。。

I strongly request that the effective measures should be taken to。。。

I would be grateful if you could…

I trust you will take my complaint seriously and…

I will appreciate it very much if you could…

I must have you fully understand that without a satisfying solution， I will reserve my right to take legal action。

I would appreciate it if you could…

I understand you will give immediate attention to this matter。

I look forward to your dealing with these problems without delay。

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

I shall be obliged if you will look into …

I understand you will give immediate reply to this matter。

中間：

The reason for my dissatisfaction is…

Under these circumstances， I find it difficult to…

I can no longer tolerate / bear…

For one thing… For another…

Therefore， I hope to change for another … or I declare a refund。

We know that you are not generally careless， but we would like your assurance that this will not happen again。