payday loan trouble in FL, what should I do?

Hello everyone, unfortunately i found myself in the payday loan trap. I am currently trying to resolve issues with two companies. B.I.G and Cashnetusa. I have actually paid B.I.G over 600.00 on a 250.00 loan that i obtained in dec. of 2007. Last month i borrowed 600.00 from cashnet usa, which "was" registered as a cso until earlier this week when they informed me that i would not be able to get an extension because my state of FL "just" mandated a law that does not allow for rollovers. And then they proceeded to tell me that i would have to pay them 669.00 in FULL on tue. aug 5th 2008, I DEFINITELY CANNOT AFFORD THIS!!! So i decided to call since it has been my intention all along to pay them, to set up an affordable payment plan, well my plan was not good enough and they insisted on trying to force me into a payment plan that was way outside of my budget. Also, if they are starting to go by FL law now, it states that a florida resident can not borrow more than 500.00 and they let me borrow 600.00. I am just lost, should i just close my bank account? thanks in advance for everyone's help!