Fixing Website Translation Issues

I currently have a website that is up and running, As many of my clients are Chinese I need a way for them to understand my product, There is already installed a translation button which when pressed shows the translated version. However, this translation is absolutely awful, so much so that it is not understandable. As a consequence I have lost many clients, I want my website to be understood by my clients,otherwise it is poinyless having a website.