Nevertheless, if u r doing business, u have to serve your customer's interest, even if they screw someone else, u r not going to allow dat person to screw them back in your backyard... b'coz u will lose their business, n possibly some other business... b'coz BS will start to think u don protect customer's interest... but the best way is to be discreet lah... u can still complain abt someone, spread things abt them... discreetly