What else would motivate them to do something? Externalities that harm others are just gravy for business until it threatens their profit. Awful externalities can even be a sign of competitive edge if they manage to avoid them bring priced in - social responsibility is anti growth.
Well their contact us also lists an address and a phone number [1].
But also, I mean if your qualm is small there's a thing called "small claims court" where you can get it settled probably cheaper than otherwise if you put a value on your time.
