The Port Authority of New York and New Jersey has dialed up a lawsuit against AT&T.
The agency claims it was charged hundreds of thousands of dollars for a phone line that didn't work.
The line runs between John F. Kennedy International Airport's control tower and a New Jersey Coast Guard facility.
A Port Authority audit found it was out of service for at least six years.
However, the phone company kept sending bills for more than $10,000 per month.
AT&T claims it didn't do anything wrong.