【答案解析】Dear Sir/Madam,
I am writing to express my dissatisfaction with the laptop I bought in your shop on New Year" Day.
The case goes like this. I bought a laptop computer at your Zhongguancun branch that day. However, after a few months, I found that a few programs installed on it ceased to work. When I returned to the shop to claim a replacement or a refund under the terms of the warranty, they said it was a manmade problem and I must pay for it.
Therefore, I would like to arrange for my faulty laptop to be exchanged or for my money to be refunded. Looking forward to your early reply.