The oversize / overweight fee will not affect the transit of your shipment through the network and can be settled once you receive delivery.
Should you feel that the weight and dimensions provided on your order were correct and you do not wish to pay the charge, you can respond to the email you have received. A member of the Send My Bag team will get back to you to confirm the weight or dimensions recorded and billed to us by our courier partner, and the additional information we require in order to raise a dispute with them.