He’s dying to know what went wrong. An elderly Long Island man says he has been unable to collect his Social Security benefits — because the federal agency thinks he’s both dead and a fraud at the same time in what has been a years-long ordeal. “I am suffering because every day I say, ‘Why do I deserve what happens to me?’ ” said Wilfredo Pagan, 77, of Freeport to NBC 4. “It’s a nightmare,” said Pagan, who runs a modest religious figurine and candle store in Far Rockaway. “I think they want to kill me.” Pagan, who is in...