Being shy is nothing to be ashamed of, but in order to meet new people, it is something you have to overcome. In the beginning, you will need to place yourself in situations that make you a little uncomfortable, forcing yourself to speak when you would rather be silent. But you can learn a lot by practicing things you might say. Practice...practice...practice. Practice them in your mind until you are comfortable with what the words. Then take those words out for a spin! Once you are finished with the phone call, observe what you did well what didn't go so well, then work on the things you feel you can improve in the future.