I've been waiting now for close to eight weeks for a refund for a canceled LH flight. On the telephone, I keep getting excuses. U.S. Department of Transportation regulations clearly state that refunds must be processed within seven business days if the original payment was made by credit card. I am not in the business of giving interest-free loans to airlines and I am considering filing a complaint against LH with DOT. Does anyone have any experience whether such action might jiggle something loose?