I have a Juniper Bank CC through Frontier Airlines, and have had it for several years. I have never missed a payment or made a late payment, and always paid at least twice the minimum due (sometimes 3-4 times).
So, imagine my surprise when I saw that my interest rate had increased from 9% to 24%! When I called to ask about it, I was told that I had an excellent track record with their company and they couldn't figure out why my interest rate had increased.
After a very lengthy "discussion", they finally told me that the problem was that I had made a payment two days too early! You just gotta love that floating due date month-to-month.
Their system had read it as a second payment for the same month instead of a payment for the current month and, as a result, they showed one "late payment", which more than doubled my APR. When I requested that they return it to the original APR, they simply said they couldn't - and they didn't.
I was punished for being too good of a customer.
That card is still open for emergencies, but the APR still sits at 24%. Needless to say, I'll close it as soon as I get another, and they'll never see my business again.
Review about: Credit Card.