You call it a "rip off version". By that I would interpret it to mean they copied the design and are calling it by another name. Is that the case?
Or is it a case where they are using an unlicensed copy of your font?
What you do, or can do, is dependent upon the situation. More information is needed.


It sounds very much like one of your friends is not quite ethical. I think your best course of action would be to contact Anagrama and provide them with complete documentation that it is your original work being sold to them. If they are like most reputable firms they will quickly back off from using it if that is what you want. They may also provide you with more information as to how they came to use it which might be of help to you.