I need legal advice regarding a payday loan company. I signed up to get information..that is as far as I went?

Apparently that company sold my information to everyone. Yes I know it was stupid. I would never do it again. I changed all my accounts, etc Now to my question- One of the companies that bought my information -Oneclickcash.com- deposited money into my bank account. I never agreed to a loan nor did I see any terms, sign anything or ask for this loan. While researching this I read horror stories about this company. I even read that they aren't even legal. I want to know what I can do about this. They are wanting payments on a loan I didn't ask for. I would send their money back but I do not trust them with my bank account information and they want to be able to debit it. Also Im not going to pay any interest on a loan I didn't sign for. What are my legal options with this situation?