Lerp doesn't work after using a lerp?

WHen I run this code when my level is 0 it lerps the rotation of the object and gets it to 0,180,0,0 but when I do it again when it reaches level 2 it doesn't change anything? not while it's lerping on level 0 and neither when it's done lerping?

here is the code:

 public void MoveCamera(int level){
     switch(level){
             case 0:
                 camera.orthographicSize = Mathf.Lerp(camera.orthographicSize, 10, 1*Time.deltaTime);
                 transform.rotation = Quaternion.Lerp (transform.rotation, new Quaternion(0, 180, 0, 0), Time.deltaTime * 0.003f);
         
                 break;
             case 2:
                 camera.orthographicSize = Mathf.Lerp(camera.orthographicSize, 8, 1*Time.deltaTime);
                 transform.position = Vector3.Lerp (transform.position, new Vector3(0, -30, -14), 1*Time.deltaTime);
                 transform.rotation = Quaternion.Lerp (transform.rotation, new Quaternion(0, 0, 0, 0), Time.deltaTime * 0.01f);
                 break;
             case 3:
                 camera.orthographicSize = 11;
                 transform.position = Vector3.Lerp (transform.position, new Vector3(0, -27.5f, -19), 1*Time.deltaTime);
                 break;
             }
 }

THanks,