I had a charge of $16.95 on my card from a place called 'At Home Rewards". I never heard of them and had not made any purchases from them. When I was finally able to reach someone at their customer service, the man said my information had been obtained from a company that I had ordered from a couple of months ago. I told him I wanted a refund of my money and I did not want anything from them.
He said he would "cancel" my account and issue a refund immediately. This was on 6/21/06. As of today 6/27/06, there has been no refund.
It seems to me this kind of practice would be illegal, both for this company and the company that gave out my credit information.