【投诉信（英语作文范文）】Dear Sir or Madam,

I am writing to express my dissatisfaction with the recent service I received at your store located on Main Street. I had high expectations for my shopping experience, but unfortunately, it did not meet my standards.

On April 5th, I visited your store to purchase a new pair of shoes. The staff was not very friendly, and I had to wait for over 20 minutes before being assisted. When I finally got help, the salesperson seemed uninterested and did not provide any useful information about the products. Moreover, the item I wanted was out of stock, and no alternative options were suggested. This made me feel ignored and unimportant as a customer.

In addition, when I tried to return the product I had bought online a few days later, the process was complicated and time-consuming. I had to wait in line for over an hour and was asked to fill out multiple forms. The staff was not helpful, and I was not given a clear explanation of the return policy. This left me feeling frustrated and disappointed.

I believe that good customer service is essential for any business, and I hope that you will take this opportunity to improve your service quality. I would appreciate it if you could respond to my concerns and let me know how you plan to address these issues.

Thank you for your attention. I look forward to your reply.

Sincerely,

Li Ming