This company offered a sample at a low price, and I asked for a sample. Stupidly, I gave my card number to do it. Now they won't stop sending the Colon pills. This is a lesson well learned. There is no return address, and no receipt for return and no number to call about it. There is no e-mail address and no person to make a formal complaint. This is a pain. I now have to "stop payment" to get this stopped.