My Cash Guardian Unauthorized withdrawal from my checking account Internet

This morning I checked my bank account online to discover that a company called Mycashguardian had withdrawn $29.95 from my checking account.  Up until this point, I had never heard of this company and never applied for anything online giving my checking account information (not in over a year any way).  I contacted my bank who said that I have to wait for the transaction to clear the account (right now it is still pending) and then I could dispute it.  I found mycashguardian.com and have tried calling them several times and each time, I have been on hold for at least 20 minutes.   I sent them an e-mail saying that I was reporting them to the Better Business Bureau.  I am trying to locate their address, but of course, it is not on their website.  Scammers like this should have to pay and should be shut down.