Theft

The same thing happened to me. I apply for a loan and do not get any feedback then they start deducting money from my bank account. I reversed it and even emailed them to stop debiting my account as i did not ask for their services. Now I have letters of demand from them. This is clearly a **** and they are getting away with it. Can somebody please provide me with legal advise on how to get out of this mess that they are putting me in.