Help with internet loans in FL

I took out some loans in April 2010 via the internet with National CS and Fox Enterprises. I have sent the revocation letters several times via email and fax. I can't send them via certified mail, as there's no physical address that I can find. However, I actually received a response from Fox Enterprises asking where I copied and pasted the letter from, AND that they were going to run the transaction anyway.

I haven't actually received a response from National CS, but they keep sending me notices from the same email address. Since the revocation letters have been sent, they have dbited my account and caused over $600 in overdraft fees. How do I deal with a company that won't abide by the law? I have filed complaints with the Florida Attorney General, and the FTC is next since they are refusing to abide by my ACH revocation.

My bank wants to charge me $78.00 to put a debit block on my account.

Here are the loan amounts and what I have paid:

Fox Enterprises: Loan $300, paid $210

National CS: Loan $300, paid $390

NONE of those amounts include the overdraft fees they have caused on my acount by refusing to honor my ACH revocation. What else can I do?