refilling
n.— «The country’s largest telecommunications operator, Econet Wireless, has installed highly sophisticated software to track down fraudsters who have been prejudicing the company of millions of dollars in potential earnings. These included those who have been diverting international calls before they reached Zimbabwe and manipulating them to appear as local calls.…He said Econet was out to catch people who have been stealing its international traffic through a practice called “refilling” of calls, thereby depriving the company—and the country—of the much-needed foreign currency.» —“Econet Cracks Down On Fraudsters” The Herald (Harare, Zimbabwe) July 18, 2007. (source: Double-Tongued Dictionary)