I have a credit card which I have a balance on. I have just a bit over a 5,000 balance on it and have had the card with this company for a couple years now, they've treated me great up until this month. I had a fixed 8.99% apr on it with no hidden fees or gimmicks (main reason I have done business with them). The interest rate was also the main reason I hadn't worked harder to pay the card off. This past month my wife made the payment online as we always do. I always pay more than the minimum and always pay a week or so early and have never been late. My wife made a mistake and transposed a couple numbers which caused the payment to be less than the minimum. As soon as we noticed this we immediately made an additional payment and made it right. You guessed it they hit me with a late fee and raise my interest rate to 12.99%. That's a 44.5% hike on the interest rate for those that are curious. I've called customer service and they actually got very hateful with me and pretty much said they couldn't do anything about it. Anyone else ever had this issue and what's a good way to deal with it??