WASHINGTON- The head of  the National Security Agency (NSA) General Keith Alexander Tuesday denied media reports that the agency collected millions of European phone calls.“Tthe assertions by reporters in France -- Le Monde -- Spain -- El Mundo -- and Italy -- L'Espresso -- that NSA collected tens of millions of phone calls are completely false. They cite as evidence screen shots of the results of a Web tool used for data management purposes. But both they and the person who stole the classified data did not understand what they were looking at,” said Alexander, head of the NSA, while speaking at a House Select Intelligence Committee hearing on potential reforms to America’s intelligence guidelines.