好像非常难想象还会有公司拒绝顾客的订货，但在某些状况下是不能不拒绝的。譬如因为买方的错误致使订单信息模糊，或者买方信用不好，或者是无货可供，或者是卖方不生产顾客需要的产品，或者需要的商品生产销售违反卖方所在地的法规，或者供货将无利可图。这类都会致使拒绝订货。
当决定拒绝买方的订单时，肯定得注意在拒绝的同时还要做到维护双方的贸易关系和让他们谅解不可以供货是什么原因。
写这种拒信一般要遵循以下几个原则：
1. Delayed opening - find a positive opening that will place the message in its correct communication context.
2. Explanation - explain clearly to the reader the benefits associated with your business system.
3. Resale - inclued the same kind of resale material as you would in refusing a request for a favor, which will help retain your reader's interest in your products or services.
4. Positive close - end the letter by telling the reader exactly what to do and where to go to complete the purchase.
下面是一封拒绝供货信，理由是订货量过小、无利可得：
Dear Mr. Lockett
It is a great pleasure to receive your first order for 60 dozen #889 Panda toys. We are eager to have your name included into the list of our loyal customers.
In an effort to minimize shipping1 and office cosplayts, we have established US$8,900 as the minimum account for every order. The savings2 that result from this regulation are passed on to our customers. We are sending you a copy of our current catalog under separate cover. When you go through the details, we are sure that you will find many cosplayt-saving items which sell fast in your local markets.
Provided that you supplement your original order so that the minimum figure is US$8,900, we will be delighted to process it immediately and ship it as required.
Looking forward to your favorable reply.
Sincerely