One of the least pleasant sounds for the most humans is the sound of a phone hanging up in their ear. Chances are, at some point, you too have been at least mildly put off by the crash of a phone hanging up in your ear. Many people will even choose another service provider based on perceived rude behavior whether consciously or subconsciously. To avoid this little sales faux pas, try counting off just a few seconds before you ever hang up the phone. The few extra seconds will be well spent!