IELTS Letter on bought some clothing online

Dear Customer Support Team,

I am writing to express my dissatisfaction with a recent clothing purchase I made from your esteemed company. On [date], I ordered a pair of black jeans (order number: 123456) from your online store. However, upon receiving the package, I discovered a significant problem with the product.

The issue lies in the sizing of the jeans. Despite carefully following the size chart provided on your website, the jeans I received are considerably smaller than expected. The waist measurement is several inches smaller than the size indicated on the label, making them unwearable. I am disappointed as I was eagerly anticipating the arrival of this item and was looking forward to adding it to my wardrobe.

Moreover, I urgently require a replacement for the jeans. I have an important event coming up in two weeks, and the black jeans were intended to be a crucial part of my outfit. It would be greatly appreciated if you could expedite the replacement process to ensure that I receive the correct size in a timely manner. I kindly request your assistance in rectifying this situation promptly so that I can prepare for the upcoming event accordingly.

I understand that errors can occur during the order fulfillment process, and I trust that your company will take the necessary steps to resolve this matter satisfactorily. I kindly request a replacement pair of black jeans in the correct size as soon as possible.

Thank you for your attention to this matter. I look forward to your swift response and a resolution that meets my expectations.

Yours faithfully,

[Your Name] [Your Order Number] [Your Contact Information]