Complain
I am writing to express my dissatisfaction with\at…
我写这封信是想告诉你们我对________不是很满意。
I very much regret to have to inform you that…
很遗憾地通知你,__________。
I would like to draw the attention of the authorities concerned to the …
我想就_____________问题引起有关部门的重视。
I feel something ought to be done about…
我觉得________方面还可以作一些努力(需要改进)。
I hope that the above situation will be improved as soon as possible.
我希望以上问题(情况)能尽快解决(改进)。
Your effort to provide good services will be highly appreciated by all.
我们会很感激您作出的一切努力。
We will appreciate your willingness to make up for the loss.
我们真的希望你们能对损失作出补偿。