How do I cancel a free sample of Trojan condoms?

About two days ago I ordered a free sample of Trojan condoms. I had it sent to my boyfriend's house, but he was really upset when I told him; he was afraid of his parents seeing it. I want to somehow cancel the order, but I can't find a phone number anywhere, and there is no customer service link on their website. Also, to anyone who has received a free sample from Trojan: Is the package discrete? Or does it say "Trojan condoms" all over it? Thankyouuuu