A long time ago I joined to the Columbia House record club.
You remember those ads that you got like 9 albums for a penny, and then just had to buy another 9 to fulfill your commitment. Then after that, for every album you bought you'd get one free, the icing on the cake.
Somehow, I must of not read the fine print, cause after I reached my commitment, I kept sending back the monthly cards stating I wasn't interested in anything they had that month. I did this for a few months until the cards stopped coming in the mail. I called them up and found out that you had to buy something every so often or they dropped you from the club.
To make a long story short, they screwed me, big time, I'll never forget that.