The Independent Singapore News Man allegedly shouts at McDonald’s manager because there is ham in egg mayo sandwich Manager praised for being 'super calm' Photo: FB screengrab/Complaint Singapore/McDonald's Share - Advertisement - Singapore – A member of the public took to social media to commend the staff manager of a McDonald’s outlet for handling well an angry customer complaining about the ham in his egg mayo sandwich. A netizen took to Facebook page Complaint Singapore on Monday (June 14) to share an incident witnessed at McDonald’s West Coast Park. The individual was placing an order at a nearby kiosk when he heard a man raising his voice at the McDonald’s staff manager.