MMG Holdings-don't remember asking them for a loan-Legal in Oklahoma?

My main question is: Is there anyone out there from Oklahoma or who knows Oklahoma law regarding payday loans? I have a copy of the "licensed" Deferred Deposit Lenders from the Oklahoma Dept. of Consumer Credit-MMG Holdings is NOT on it, and they(FFG) will NOT tell me where MMG is located. I received a $300 deposit in my account in November from a company called MMG Holdings LLC-by the time I saw it in my account it was too late to cancel it-I know I owe the 'principle' and absolutely want to pay that back. But I KNOW I did not apply for a loan from MMG Holdings. I do have a 'loan document' with 'my' electronic signature on it, but it had to have been done through a different company that sent me to MMG. I feel that would be extremely easy for them to transfer off another document or put in themselves. Nonetheless, all of a sudden, a message was on my machine from someplace calling themselves FFG. I called and spoke to a woman who would not tell me any other company name besides MMG Holdings (as in one of the 'generic' companies that advertise through e-mails like CashNetUSA or Cash500) and absolutely refused to give me an address when I told her my bank account was closed and I'd have to send a money order saying they don't accept checks, money orders, or cashier checks...only accepted Prepaid Visas, or other credit cards. Anybody know of MMG Holdings LLC and are they legal?