That can not be.
そういうわけではない
Such is not the case
そんなことはないです
そんなことないです
It is no such thing―nothing of the kind.
そのようなことはない
Such a thing seldom happens―rarely happens―hardly ever happens.
わけの無い
そんなはずないよ。
That is not to be done―impossible―impracticable.
It is not impossible―quite possible―within the bounds of possibility.
そんなはずないよね。
That can hardly happen.