1. Be calm.
Losing your temper and flaring out at the other person typically isn’t the best way to get him/her to collaborate with you. Unless you know that anger will trigger the person into action and you are consciously using it as a strategy to move him/her, it is better to assume a calm persona.
Someone who is calm is seen as being in control, centered and more respectable. Would you prefer to work with someone who is predominantly calm or someone who is always on edge? When the person you are dealing with sees that you are calm despite whatever he/she is doing, you will start getting their attention.