How should you respond to an unflattering news report about your business? That depends on many factors, only a few of which I'll mention here. One factor, of course, is what the report claims.
It also depends on who published the report. Calling the report into question means calling the reporter(s) and their publication into question. It's easier to cast doubt on the work of a supermarket tabloid, for example, than that of, say, the Associated Press. Regardless of who published the report, proceed with great caution unless you've got a smoking gun for journalistic misconduct.