I am using Commerce Kickstart 7.x-1.2.
I 've set a rule "Apply shipping rate to an order" when a product is placed to the cart. This shipping rate is visible and calculated automatically in the cart while checkout. Unfortunately, when a customer click on the cancel button that appears at the bottom of the checkout page -and returns to the front page of checkout pages- this shipping rate disappears from the cart.
I am trying to remove this cancel button. There seems no way to remove this.
Ideally, I would like to make it the users return to the store index and not to the front page of checkout when clicking on the cancel button.

However, this doesn't seem possible with Rules.
Does anyone have any suggestions?
Thank you in advance...