False review on Google

[Guest]

Someone has left two fake reviews against my website on Google, they haven't left a name only a log in name, they do use my name and accuse me of being rude aggressive and threatening and offering poor standards of work, I know it is the same person as they both use the same terms in describing work in a certain way that I don't actually do. Since these reviews have been left I have received no calls asking me to offer quotes although there has been plenty of views. How can I identify the person so as to take them to court for my losses based on previous years of work!