The phrase "a private complaint" is correct and usable in written English.
It can be used when referring to a grievance or issue that is meant to be kept confidential or not shared publicly.
Example: "She decided to file a private complaint with the HR department regarding the inappropriate behavior she witnessed."
Alternatives: "a confidential grievance" or "a personal issue".
But police failed to include him on the list of men she had accused, so she filed a private complaint before a magistrate in 1999, said Sureshbabu Thomas, a special prosecutor for the case against the rest of the men.
A private complaint among record executives (but one they will not say publicly) is that their money is not buying what it used to, that it was easier for a promoter to influence a radio station's playing list when the decision-making by programmers was not so centralized.
As she should, as a writer trying to earn a living who had her work stolen and had a beyond inappropriate response to a private complaint about it.
Erdoğan demanded that the German government prosecute Böhmermann under that section, while also filing a private complaint against him.
To pull these graphics - which had received over 2.4m visitors - merely because the Wikileaks website links to them; and a US senator issued a public (not private) complaint - smacks of cowardice and blind censorship.
The private complaint reports inspectors shouting at the head, and telling staff they wouldn't move their car away from the electric gates because "I'm Ofsted, I can park wherever I want".
At Blind, a security lapse revealed private complaints from Silicon Valley employees.
In his letters, the president hinted that after more than a year of public and private complaints that allies have not done enough to share the burden of collective defense, he may be considering a response, including adjusting the United States' military presence around the world.
Private complaints filed by Sunbeam bondholders and a group of Texas investors against Mr. Dunlap, the former chief executive, were also settled.
Stronger private complaints have also been made to ministers, The Independent has been told.
At a Senate Banking Committee hearing this month, Rich Cordray, the director of the Consumer Financial Protection Bureau, said his office has received thousands of private complaints about student loans in the past year.
