charged my bank account without my consent

Shopping Essentials has been charging my bank account for 2 years.  It is my fault that I didn't notice this but I was never sent any notification as to what this company was.  When I called, they told me that they had the wrong email address and that they had contacted me.  They refunded 2 months.  I called again insisting that they refund the entire amount.  I just recevied a letter (no return address) stating that they will not refund anything.  I will posting on every site I can find to blast this company and make people aware of what they are doing.  The company that I bought from was called NorthStyle.  I have also written to them and have not received a response.