With any complaint, the best method is to write a letter (not an email or phone call) to both Honda America HQ and the District office for that particular Honda dealership (their addresses can be found in your owners manual). Since the "General Manager" is rarely the owner, I don't think his boss will be overly amused at his poor behaviour. Also incidents like this can prevent dealerships from receiving larger numbers of highly sought after cars (like our E's). I can only hope too that this guy was only having a "bad day" and doesn't regularly break into tirades like the one you experienced. Good luck and keep us informed.