【英语投诉信范】在日常生活中，当我们遇到不满意的服务、产品或体验时，写一封正式的英文投诉信是一种有效的方式。它不仅能够表达我们的不满，还能促使相关方采取行动解决问题。以下是一封标准的英语投诉信范例，适用于多种场合，如酒店服务、购物体验、快递延误等。

Subject: Complaint Regarding [Specific Issue]

Dear [Recipient's Name or Department],

I am writing to formally express my dissatisfaction with the service I recently received from your company. On [date of incident], I purchased [product/service name] from [company name], and I was extremely disappointed with the experience.

To be specific, [describe the problem in detail, e.g., "the product arrived damaged," "the customer service representative was unhelpful," or "the delivery was significantly delayed"]. This has caused me considerable inconvenience and frustration, especially since I had high expectations based on your previous reputation.

I would appreciate it if you could look into this matter at your earliest convenience and provide a satisfactory resolution. Ideally, I would like to receive [specific request, e.g., "a refund," "a replacement," or "an apology and compensation"].

Please let me know how you plan to address this issue, and feel free to contact me via email at [your email address] or phone at [your phone number] for further discussion.

Thank you for your attention to this matter. I hope we can resolve this in a timely and fair manner.

Sincerely,

[Your Full Name]

[Your Contact Information]

这封投诉信结构清晰、语气礼貌但坚定，有助于提高问题被重视的可能性。当然，根据具体情况，您可以对内容进行适当调整，以更贴合实际情境。