Konica Minolta Dimage A200

Been round and round with Konica Minolta. Bought this high-end camera. Worked for ten days. Wouldn't go into record mode to take new pictures, only the display mode. Sent in for repairs. Got camera back, after two days, same thing. Sent in, got back, after one day, same thing. Sent in, got back, same thing. Demanded new camera or money back. Got new camera. After two weeks, same thing. What is it with this camera. I sent email to contact company. They said try a new card. I have tried four different cards. Still no-go. HELP!