Captors of 15 foreign hostages in Beirut, Lebanon, again linked their captives' fate to the controversial book "The Satanic Verses" by refusing to respond to efforts to free them, a caller said as protesters burned an effigy of the novel's author. More than 5,000 supporters of the pro-Iranian group Hezbollah marched Sunday in the mainly-Shiite Moslem southern suburbs of Beirut chanting "death to the apostate (Salman) Rushdie," the British author who wrote the book considered blasphemous by Moslems. "We will not rest until we kill Rushdie and send him to hell," shouted the protesters.