I just bought dji phantom3 standard last week. Everything was going really well until today. I took off about 40 meters high and suddenly I can't control my drone. It started to fly over the building by itself. It went behide the buildind and I tried to call it back home but it was too late. The connection was lost. What do you suggest me to do in this case. My heart was broken to see it flew away like that. Please give me some advise.  Thank you

Sorry for your loss!  Do you have your video of crash or flight records?

that is what happen to me with my p3 advanced gutted absolutely gutted