索赔函怎么写？

Dear xxx:

we regret to inform you that your company failed to deliver all the cloth for order No.xxx, which unfortunately resulted in the fact that we were unable to complete the scheduled garment-making work (approx. 79 peices short of the target number). Therefore we require your company to compensate us for the incomplete delivery as quickly as possible.

faithfuly, xxx

你把具体的产品问题来写清楚就可以了。大概的内容包括：
标题——索赔函，必要时也可注明索赔原因，如《质量不符索赔函》等
正文——主要包括索赔的依据、索赔原由和事实、处理办法以及赔偿金额等
落款——索赔方的名称、签章和源日期
附件——提供相关检验报告等，可省略
索赔函一般适用于贸易过程中产生争议或发生纠纷后，受损方依据有zhidao关协议或规定，向违约方提出赔偿损失要求的函件。