Phone the hobby shop where you bought the plane ask them how to get in touch with the local flying club. You said that "on the first flight something goes wrong". It may be that the planes were ok but they crashed before you figured out how to start to control it properly. Another possibility is that the control rods were not adjusted properly for the right movement and direction. Was the CG and lateral balance checked?? There are a dozen things that can be wrong that can make a plane crash almost right away. A competant instructor can go through your plane and find potential problems before the plane goes up and crashes. Most clubs offer free RC instruction on a buddy box. Join an RC flying club and get some help or you will in for more dissapointment.