Argentina’s ambassador in London has made a formal complaint to the BBC, accusing Jeremy Clarkson, the host of globally popular TV motoring show “Top Gear,” of provocative and insulting behavior during the filming of an episode in Argentina. Alicia Castro visited the BBC’s offices in person on Monday to allege that Clarkson had evoked memories of the 1982 Falklands war during filming and then made insulting remarks about the Argentine government and people.