You have some problems with your story. You did not buy the knife from ETS because ETS is not a retailer. Aeromedix is the only retailer of knives in the RSK family. So by making a blatantly false claim your credibility takes a dump. Second, you threaten continued libel if you don't get a refund based on your false claim from a person you didn't pay for the knife. It sounds to me like you are asking Doug to pay you to stop making your false claims. Blackmail may have been too strong, extortion is probably more appropriate. Regardless, your ethics are severely lacking.