Catastrophegirl bought a computer from Dell during a promotion for 12 months of interest-free financing. Like a good little consumer, she had every intention of paying off the balance long before twelve months were up. Which is good, because when she checked her statement, she happened to notice that the deal suddenly became six months of no-interest financing. What happened to catastrophegirl’s deal, for which she still had the original receipt? Dell basically shrugged and extended the deal to 12 months. Even if this is an error, will it trap other consumers?