The phrase 'ignore a request' is correct and usable in written English.
You can use it to express that someone is not responding to a request. For example, "John ignored my request to help with the project."
Some critics of the interviews said few of the Muslim men were likely to feel free to ignore a request for one.
European Union lawmakers are expected to ignore a request by the Bush administration to revise a data-protection law they are drafting to allow the authorities greater access to information about telephone calls and Internet messages.
Bhairavi Desai, the executive director of the New York Taxi Workers Alliance, a drivers' group, said that the sting operation was "a really cheap way of catching drivers off guard," adding that cabbies would rarely ignore a request by the commission to show up at its headquarters "because they are too afraid of losing their livelihood".
Dr. Naidenko, a staff scientist at the Environmental Working Group, was there to plead with the agency to ignore a request from the American Chemistry Council to make more than a dozen last-minute changes, some pushed by Dr. Beck while she was at the council.
Stories like that have made me determined never to ignore a request from an author asking for a blurb.
Never ignore a request for help, even when you don't think she really needs it, you wouldn't want someone to do that for you, would you?
He refused to repay the money, ignoring a request by the city's integrity commissioner that was endorsed by the council.
The Algerian military mounted an operation at the site on Thursday, ignoring a request from British Prime Minister David Cameron that any such action be coordinated with the UK.
The trouble began last spring when Mayor Marilyn O'Rourke ignored a request by a local minister to proclaim 1990 the International Year of Bible Reading.
Last month, Mr. Turabi ignored a request by Mr. Bashir to postpone debate on amendments that would drastically shrink the president's powers.
