1. First, make sure that the reasons for the complaint are clear and definite, and avoid using vague or ambiguous words.

Secondly, provide objective facts and evidence to support the reasons for your complaint, avoid exaggerating or distorting the facts, and ensure that your complaint is based on the real situation.

3. Finally, describe the problem and situation in detail, and provide enough details so that auditors can understand the whole picture of the problem.