I did try the credit card dispute option. They had me send both of the incorrect converters back, (the only real leverage I would have had) and then the credit card company proceeded to tell me that the time limit had exceeded their 1 billing cycle limit, and there wasnt anything they could do. Needless to say, that CC went down the paper shredder. Good idea, tho. Make sure you check dates and policy of the CC that you are using. Jim