It doesn’t matter what the law is in any other county, Walmart is a U.S. based business. By using their products you agree to abide by U.S. law when it comes to legal matters, and the state law in which they reside says the refund policy of Walmart is binding. 90 days is only for certain electronics. Computers, tablets, drones, etc. are under a 15 day window. They provide zero refunds for digital content such as digitally distributed software or VOD. A 15 day period for other products such as video games if opened, cell phones, etc. I highly recommend you actually read up on this if you want to engage in a meaningful discussion about this topic, or even know what it is you are agreeing to when purchasing certain products.