Wow this is a good example of why we should be so careful. BUT it isn't a blend it's a natural scent (as I understand it), so it belong to Mother Nature. If we want an exclusive those details must be worked out contractually before hand. Realistically if it catches on it will be duped anyway - sorry. Since exclusive was not a part of the inquiry sorry to say I don't think anyone is at "fault". Actually the perfummer invented it. The question would be was it invented under exclusive contact to you. Sorry don't mean to be negative but there is a lesson that may help others in the future. Best of Luck!