Force being a jungler but gets blame

When all lanes are properly called then a last minute troll just wanna screw entire team comp hence I had to change to jungler at last possible seconds. Then this troll start feeding his laner then proceed to blame me? For what? For feeding his laner when I was clearly pressuring other lane?? When laners doing badly and feeding, they always loves to blame their babysitters (Jungler and Support).