I have a US AIR Credit Card and made regular payments through my checking account. The amount is usually $50 more than the minimum to account for additional charges. The payment is automated and scheduled to arrive 10 days before due date. I made a payment of $650 one month which turned out to be $25 less tanh the balance due. When they notified me, I sent the additional money and adjusted my future payments. I was told the this is considered a late payment and they raised my interest rate to 27%. I called them but could not get any... read full review »