Protechniklab ProTechniklab PT-65 Surround Sound Theater System does not have manual and does not work properly. Web site contact information invalid. New York, Internet

Two Hispanic men approached me at a  retail outlet saying they were in the area installing home theater systems and they had three extra systems for sell.  They needed to sell them before going back to Amarillo.  Their boss asked them to try to sell them before returning back to Amarillo.  They had a shipping receipt and seem legit.   Got home and the system does not work properly and not all the parts were included in the boxes.  A manual was not included as well.  We got on the web site that it showed on the box.  However, the web site does not offer a phone number and the contact information is not valid.