MBF Leasing WoW I Have Been Taken New york , New York

Two men came by my store before I opened to offer a check processing machine, since I was not open yet and had not unpacked my equipment, I told that I did not know if I needed it. they assured me that once I opened if I did not need it I could send the machine back, just give them a call and they would pick it up and the machice could be re-leased. They had me sign a contract, stating that a typed copy would be sent with the machine. I never got a contract that was filled out. I called the number on the card that they gave me; I got hung up on several times, when someone did answer they said that they did not know the men that came to my store. Because I had also given a deposit slip so that they could refund me for any checks that they said we good and were not. They began debiting me for the machine. I went out of business and tried to call again, after I received a letter demanding the monthly payment, I advise them that I had been trying to send the machine back from the beginnning and was getting the run around, and they kept hanging up on me, I told them that I was no longer paying them and the account was now closed. I then received a request for the amount of $3895 for the machine from MBF Leasing, I did not know who they were and why they were making demands for payment, when I did not have a contract with them, They stated that they were the parent company, I advised them what took place they told me they did not care and wanted the full amount. advised that I did not have the money and I felt that I was scammed. They wanted the money, then hung up. I made several attempts to contact, they were too busy and said that they would call back. They have listed it as a charge off and have sent demand letters or they would take me to court. I have nothing with their name and on the contract I have mine is the only signature. HELP!!