Now this is what we call a legendary computer glitch: Manhattan accountant Frank Van Buren received 2,000 ExxonMobile gas cards then the energy giant refused to take them back when confronted with the problem. The problem started after Van Buren called Exxon Mobile to replace his two existing cards. What he got were two separate deliveries of 1,000 cards each. Published reports indicate the cards were active already as well, sans the usual sticker that provides a number for customers to call to activate. Talk about an identity thief’s delight. "How could you send me 2,000 cards by mistake?" Van Buren said he asked customer-service representatives. "They refused to take them back.” "We don't know what happened," Exxon Mobil spokeswoman Paula Chen told New York Daily News. She added that the company would review the matter with the card's issuer, Citibank, which handles its accounts. ExxonMobil spokeswoman Paula Chen said the Irving, Texas-based oil company was looking into the mix-up. Such mistakes only fuel to the potential of credit card fraud and identity theft. Recently the U.S. Secret Service cracked down on an international ID theft ring that is responsible for more than $14 million in fraud losses. Investigators found more than 28,000 stolen credit- and bank-card numbers as a result of this operation, the Secret Service said. The arrests were part of an undercover investigation into the activities of an online criminal known by the alias, "Lord Kaisersose," who is "associated with Internet sites known for identity theft and financial fraud activities," the Secret Service said.