例如：Letter of complaint 便可以。
Dear Ms. Wong,
Thank you for reading my letter. Last Sunday(11th July 2022) was my classmate Mary’s birthday. We went to your restaurant to celebrate Mary’s birthday. But your restaurant was not good as I expected. We couldn’t tolerate that restaurant at all. The service was horrible, and the food was awful. The most unbearable was the hygiene of the restaurant terrible, we felt very disgusting. We complained about the waiter’s food, hygiene, and service. But his attitude was very proud, and he ignored us. It was really provoking! Finally, the waiter drove us away. How dare he was! All of us were very angry. I doubt whether I will come to your restaurant or not. May I know if there is any follow-up action that the restaurant will take?
Dear Mr. So,
We are sorry to learn that your container of Lemon Honey has not yet arrived. As we have not heard anything from our carrier about delays in transit, your letter came as a surprise. We again apologise for not having been able to inform you in advance of this delay. We are taking up this whole question with our carrier to make sure this will not happen again and to make arrangement to deliver your goods as soon as possible
XYZ Co Ltd deliver team manager