Just because they are a big company doesn't mean everything they do is legal. The legal system exists exactly to stop this kind of behavior. You can go to small

Just because they are a big company doesn't mean everything they do is legal. The legal system exists exactly to stop this kind of behavior. You can go to small claims for under $100 out of pocket, and you generally get these fees reimbursed if you win. In many cases just filing a lawsuit is enough to get them to settle and provide a refund, because they would spend more money sending someone to court(and probably lose anyways).