Object goes through wall.

Hello guys,

I'm trying to create a maze within a cube with a sphere in it, and you can rotate so you can get the ball through the maze. The maze in the cube is build out of walls.

now the problem is that when I rotate the cube, the sphere gets forced through the walls of the maze. I've searched around for this problem already but in this case it's different because The walls actually get forced through the sphere.

The sphere contains a rigidbody and it's collision detection is on continuous Dynamic. I have also tried to give the cube and the walls and set it on kinematic and also set their collision detection to continuous Dynamic. That didn't help.

Is there a way to get this collision detection right?

Thanks in advance ;)