Complex sentence: Richie goes on bizarre nationalist rants, repeatedly insisting that British things are'best in the world', and is extremely rude to every customer who enters the shop; he insults a friend of Eddie's who came to complain that his newspaper wasn't delivered.
Split into simpler sentences: Richie goes on bizarre nationalist rants, repeatedly insisting that British things are'best in the world', and is extremely rude to every customer who enters the shop. First, Richie insults a friend of Eddie's who came to complain that his newspaper wasn't delivered.