1. I am writing to complain that the furniture bought from your company is defective.

2. Your incorrect delivery has caused a great deal of trouble to us.

3. I hope that you will treat it seriously and take the necessary steps to ensure that it won’t happen again.

4. I hope to receive a call from your customer service to resolve this issue soon.

5. We are sorry that a mistake has been made on the invoice No. 1296.

6. 对于这一失误，我们向您道歉并附上修正后的发票，上面已对您的支付金额做了更正。

7. 贵方迟迟未交货给我方造成很大麻烦。因此，我方决定向贵方索赔5 000美元。

8. 请你们换货或者在15日内退款。

9. 如发现我方地毯质量劣于样品，我们愿意承担一切责任。