You don’t pay to download WhatsApp Business. Many small businesses use WhatsApp Business without ever paying. At the time of writing, only when you want to integrate with WhatsApp’s API do you pay per message sent. This is a 3rd party service, and is not available on tollfree 0800 numbers. For a small charge, and only when needed, Cleartone can help you set up WhatsApp Business to your Cleartone number, although often customers are able to do this themselves