Unauthorized bank account charges

I applied for a check loan thinking that i was approved. When i checked my account their was a debit for $49.95 taken out. The charge also caused an overdraft fee of $29.00. I don't know this company and never heard of them. I emailed them three different times with the website the bank gave me. No one has contacted me yet. I called them using the phone number in my statement but the number they provide is just a answering service.