The complaint about the tourism service failure is divided into kernel service complaint, service attitude complaint and special demand complaint;

本研究中旅游业服务失误的原因分为核心服务抱怨、服务态度抱怨和特殊需求抱怨；

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The most common complaint is about poor service.

最常见的投诉与服务差有关。

《牛津词典》

One complaint in Portugal is that the monopolistic state of some service industries serves only to reinforce existing imbalances.

在葡萄牙，有人抱怨，一些服务行业垄断国只是在使得已经存在的失衡更为严重罢了。

youdao

One day she saw an ad on the web for a complaint referral service, Ecomplaints.com, and lodged her gripe there.

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And from next year, anyone with a complaint about the service given by a CMC will be able to complain to the Legal Ombudsman, who can order financial compensation to be paid.

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So what we're saying is we should have the clinical freedoms to work with the patients for the patients' benefit to work out who takes priority in a cash limited system and make sure the patient gets the quality service that they need for their complaint - not the one that's politically expedient.

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