Calling the Director
At every duplicate bridge game, there is at least one trained referee known as the director. She is responsible for making sure play proceeds in a timely manner and for settling any problems that might arise. Whenever you are unsure of the proprieties or laws of bridge, you may tell the rest of the players at the table that you are going to call for the director. Then simply raise your hand in the air and say, "Director, please." The director will then come over to help straighten things out. When in doubt, ask the director! That is what she's there for.