Camera stuck at 0,0,0

Im trying to setup the camera in order to move it using the wasd keys along with middle mouse click and q or e for rotating. I have the camera as a child of a empty game object. However whenever I run the script my camera becomes stuck at position (0,0,0).

public class RTS_Cam : MonoBehaviour {

 [Header("Camera")]
 public Transform cam;

 [Header("Movement Speeds")]
 public float moveSpeed;
 public float panSpeed;

 [Header("Zoom")]
 public float zoomSpeed;

 [Header("Rotation")]
 public float rotSpeed;
 private Vector2 mouseLook;

 private Vector3 startPos;

 // Update is called once per frame
 private void Start()
 {
     startPos = transform.position;
 }
 void Update()
 {
     if (Input.GetKeyDown(KeyCode.H))
     {
         transform.position = startPos;
     }

     HandleMove();
     HandleRot();
     HandleZoom();
     HandlePan();
 }

 private void HandlePan()
 {
     if (Input.GetMouseButton(1))
     {
         float mouseX = Input.GetAxis("Mouse X");
         float mouseZ = Input.GetAxis("Mouse Y");

         transform.position += transform.forward * -mouseZ * panSpeed * Time.deltaTime;
         transform.position += transform.right * -mouseX * panSpeed * Time.deltaTime;
     }
 }

 private void HandleMove()
 {
     float mouseX = Input.GetAxis("Horizontal");
     float mouseZ = Input.GetAxis("Vertical");

     transform.position += transform.forward * mouseZ * panSpeed * Time.deltaTime;
     transform.position += transform.right * mouseX * panSpeed * Time.deltaTime;
 }

 private void HandleRot()
 {
     float horizontal = 0f;

     if (Input.GetMouseButton(2))
     {
         horizontal = Input.GetAxis("Mouse X");
     }

     if (Input.GetKey(KeyCode.Q))
     {
         horizontal = -1f;
     }

     if (Input.GetKey(KeyCode.E))
     {
         horizontal = 1f;
     }

     Vector2 look = new Vector2(horizontal, 0f);
     mouseLook += look * rotSpeed;
     transform.localRotation = Quaternion.AngleAxis(mouseLook.x, transform.up);
 }

 private void HandleZoom()
 {
     float zoom = Input.GetAxis("Mouse ScrollWheel") * zoomSpeed;

     cam.position = cam.forward * zoom;
 }

}