【正确答案】 Dear Manager,
I am one of your customers and I am writing to complain about the quality of the digital camera. I bought it with my friend last Friday morning at your store.
During the five days I brought the camera home, problems have emerged one after another. For one thing, the screen is always black, making the camera no different from a traditional one. For another, the battery can support the camera' s operation for only two hours. Therefore, I wish to exchange it for another camera or declare a refund.
I believe you can give me a reasonable solution to these problems. I will appreciate it if my problem receives your attention as soon as possible. Looking forward to your reply!
Yours truly,
Li Ming