I had the same thing happen when I went online to get my "free" credit report. I unknowingly signed up for a $30/month membership for them to alert me everytime someone checks my credit. It took me 3 months to notice and question it on my credit card bill. That was several years ago and I've smartened up since then. Live and learn. I refer to this as "tuition"---the price you pay for making a silly mistake.