If any insurance company cancels, refuses to renew or otherwise terminates the contractual relationship with any agent in violation of the provisions of this article, the agent who has been damaged thereby has a cause of action against the insurance company for specific performance, injunctive relief or for damages sustained by the plaintiff as a result of the termination of the relationship, including ascertainable loss of goodwill as a result of the termination of the relationship: Provided, That any action brought by an insurance agent against an insurance company for wrongful termination of the contractual relationship shall be commenced within two years after such wrongful termination.