I got 2 coupons in the mail this week for free toothbrushes. Why? Because I noticed they had put 'hard' tooth brushes inside a package labeled 'soft' and called them to see about it. They did not claim that happening, but sent me the coupons. Cool!
Actually, when I have a product that is not right, I do call the company and tell them and usually that is the response. They want to know. And I get coupons.