Sorry but if you have enough money for an internet connect or smartphone (assuming you're not posting here from a library) I'm very confused how you don't have $600 to just pay the one off this second.
This thread scares me re: the economy.
The day I paid off every credit card (I now keep my capital one venture, pay EVERY bill with it, rack up points, and pay it off every month) was the day I started saving to have at least 6 months salary in the bank. After I accomplished both of those, was the day I felt "free."
I know that's not easy, and for some damn near impossible, but $600???
Yes, I'm judging. And I wish someone had done to the same to me when I was 25 and had a 550 credit score.
Also, not using a credit card at all is stupid. My monthly expenses are roughly $8000 (this includes all bills, all groceries, EVERYTHING, most impactful car payment and housing lease). Paying that every month gets me $160 in free money every month (Captial one venture). Plus credit card protection is far better than debit card.