No matter how it works, it's a free call! To make a free call using an Internet phone, you might have to download free phone call software or use a soft phone from an Internet phone provider website. Important: A free Internet phone can not be used to make a 911 or similar emergency call.
vagary - an unexpected and inexplicable change in something (in a situation or a person's behavior, etc.); the vagaries of the weather; his wealth fluctuates with the vagaries of the stock market; he has dealt with human vagaries for many years.
1 an unpredictable or erratic action, occurrence, course, or instance:the vagaries of weather; the vagaries of the economic scene.  a whimsical, wild, or unusual idea, desire, or action.