7 sentences

1. 夫妻半夜吵架，邻居投诉。

   fū​qī bàn​yè chǎo​jià, lín​jū tóu​sù.

   Couple quarrels at midnight, neighbors complain.

   Source: OpenSubtitles

2. 去处理一下他的投诉吧。

   qù chǔ​lǐ yī​xià tā de tóu​sù ba.

   Go and take care of his complaint.

   Source: OpenSubtitles

3. 已经有一些投诉了。

   yǐ​jīng yǒu yī​xiē tóu​sù le.

   There've already been some complaints.

   Source: OpenSubtitles

4. 我要投诉你！

   wǒ yào tóu​sù nǐ!

   I'll file a complaint against you!

   Source: OpenSubtitles

5. 经理指派他去处理这个客户的投诉。

   jīng​lǐ zhǐ​pài tā qù chǔ​lǐ zhè gè kè​hù de tóu​sù.

   The manager assigned him to handle this customer complaint.

   Source: Dong Chinese Dictionary

6. 消费者向客服中心投诉了产品质量问题。

   xiāo​fèi​zhě xiàng kè​fú zhōng​xīn tóu​sù le chǎn​pǐn zhì​liàng wèn​tí.

   Consumers complained to the customer service center about product quality issues.

   Source: Dong Chinese Dictionary

7. 这次产品质量投诉在网络上引发了一场巨大的风波。

   zhè cì chǎn​pǐn zhì​liàng tóu​sù zài Wǎng​luò shàng yǐn​fā le yī cháng jù​dà de fēng​bō.

   This product quality complaint sparked a major uproar on the internet.

   Source: Dong Chinese Dictionary