When making an online transaction on our website, the system only authorizes an amount on your credit card, to be captured when confirming, approving and shipping your order. Consequently, if we need to adjust any amount in your favour, we will only capture the necessary amount from teh original transaction. By doing so, we do not have to refund any transaction.
A good example would be when pumping fuel at the gas station. You preauthorize and amount and you end up only be charged for the final amount of your fuel purchase.