My Renault wont start?

Hi I have a Renault Scenic 2005, I went to start the car earlier, after using it all day, and nothing, no dashboard displsy, no interior lights, I cant even unlock the boot with the remote control. I have tried to jump start it and had another car connected to the battery for 15 mins, but nothing, no sign of life what so ever.
If anyone can help I would appreciate it!!!!