I'm going to complain to your superiors.

我要去找你的上级投诉。

《牛津词典》

I'm going to complain to the manager about this.

我要就这件事向经理投诉。

《牛津词典》

The leaflet explains how to complain to the banking ombudsman.

该手册说明了如何向银行调查官投诉。

《柯林斯英汉双解大词典》

At the same time,the Palestinians complain that Israel's separation wall at the entrance to Bethlehem casts a dark shadow over Christmas.

VOA: standard.2009.12.25

In Numbers 14, for example, when the Israelites complain again, God is determined to destroy them, and Moses intervenes, and the intervention leads to a compromise.

比如，在《民数记》14中，当犹太人再次抱怨的时候，上帝决定毁灭他们，但是摩西阻止了，摩西的干涉，使上帝妥协了。

耶鲁公开课 - 旧约导论课程节选

Now, you may say this doesn't amount to a very limited government, and the libertarian may complain Locke is not such a terrific ally after all.

现在或许你会说，这并不算真正有限的政府，而自由主义者会抱怨洛克并不算他们的好盟友。

耶鲁公开课 - 公正课程节选

Unfortunately, the disease is usually first noticed when people complain to their doctors of memory problems.

ECONOMIST: Diagnosing dementia

"We feel sorry for their decision to complain to the WTO, " Mr Miao said.

BBC: US, EU and Japan challenge China on rare earths at WTO

However, if the operator is a member of ABTA, unhappy passengers can complain to them.

BBC: Q&A: Air passengers' rights