China's consumer protection agency says faulty mobile phones were the leading consumer complaint last year.

中国消费者保护协会也说山寨手机是去年的头号消费投诉对象。

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The AHAIC ( AnHui Province Administration for Industry and Commerce) 12315 Consumer Complaint Center is an organ which directly faces the society, accepts consumers' complaints.

安徽省工商行政管理局12315消费者投诉中心是直接面向社会，受理消费者投诉的机构。

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Complaints in other fields you can dial 12315 for the consumer complaint hotline. We will make a record of your complaint today. This will help to improve our service, thank you.

您可以打12315消费者投诉热线，我也会把您今天的情况进行记录，相信这对我们消费环境会是很好的改善，谢谢您。

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United Airlines had the highest consumer complaint rate of the 14 airlines included in the report, with 4.24 complaints per 100, 000 passengers.

NPR: Airline Passenger Complaints Surged In 2012

David Torok, director of the FTC division which oversees the Sentinel Network, noted that two other consumer complaint areas saw a notable increase last year.

FORBES: FTC: Explosion Of Tax Identity Theft Swamps Growth In Other Consumer Complaints

Around 10m Americans are victims annually, and it is the leading consumer-fraud complaint over the past five years.

ECONOMIST: Identity theft