FastLoanFast Unauthorized withdrawal of money from my checking account-had never had contact with them , Internet

On 2/28/13, an unauthorized withdrawal was made from my checking account by fastloanfast.  They presented a check with all of my checking account information on it, although I had never heard them nor saw their website until the check was cleared from my account on 3/4/13.  In follow-up, I have learned that this is not something that has just happened to me.  Someone/something had sold my checking account information to this business.  I have used payday loans in the past; however, never with this company and only with companies that I have had experience and I trust and fall under the guidance of the Wisconsin Dept of Consumer Affairs.

I have sent an email to them as well as have placed numerous phone calls left numerous voice mails and have had no response from anyone.  I have also filed a complaint with the BBB and with the Attorney General in Nevada as I found on one of the complaint sites that this company has a PO Box in Nevada.  However the Attorney General indicated to me that this still could be an off-shore organization.  He did say that I am not the first person with this complaint.
I have reported this to the fraud division of my bank, and I plan on submitting a complaint to the FTC.  I will also have to close my account to protect my financial interests.

This is not about the $30; however that does disturb me.  It is about the flagrant abuse of individuals and their right to privacy and protection.  If there is anything that I can do to testify against these folks please let me know!