Have you ever run into this scenario? You are out of the office working with a customer, or perhaps at a trade show or event, and you really need to deal with an emergency with an upset client. You pull out your phone and give the client a call and make things right. All goes back to normal for a while. A few weeks later the client wants to discuss something else and calls your cell phone directly instead of using the proper channels. You politely try to direct them to use your business line, but as the months go by, they start racking up more and more calls to your cell phone, taking your valuable time when any one of your employees could have helped them.