Canon USA Ordering Online/Shipping Charge Scam Chesapeake , Virginia

I placed an online order with www.usa.canon.com on a Sunday afternoon, May 20, 2012. Less than a half hour later, I changed my mind and went into "My Account" to check the order status and noticed there was no prompt to cancel an existing order. I called the Customer Service number listed on the web site and it was a recorded message saying to call back during regular business hours. I called first thing Monday morning to cancel the order and they said it was not possible to cancel an order and it was already in process anyway. I would have to accept the delivery. I asked why there isn't a prompt to cancel orders online and the representative told me it was not possible to cancel an order at any time. I explained what had happened and after much discussion, they agreed to send a mailing label so that I could return the unwanted item without paying additional shipping. When I received my credit back for the item, I was charged for the shipping fees PLUS tax. At no point was I told that I would be charged for anything. When I called Customer Service back on June 4, 2012, the supervisor told me that under no circumstances would I be refunded the shipping charges plus tax. I was told I should be grateful they didn't charge me to send it back in the first place. I told her I didn't want the item in the first place!I lost $17.03 in the process. All because www.usa.canon.com doesn't have a "cancel order" prompt on their web site. I find this business practice unethical and unprofessional. Basically, they are scamming their customers and collecting shipping charges off of every single order that is placed online.