Crafty, sneaky people, charge $15 just to talk to them. Even if proved wrong, will not back off of habits like withholding payments made ON TIME in order to increase interest rate.
I suggest that if you can get a credit card from somone else, do so, because their low introductory offers are just ways to suck you in, and then they find a way to raise the rate. I made my first payment on time and they had the audacity to say they had trouble with my local bank - which my local bank disputed - but Juniper would not back down. I paid a higher interest rate for a full year.