Hotels One Scam! Big Time Internet

Tried to book at the Marriot in Detroit.  Used Google and thought I was on the Marriot Web site it showed the Marriot Renaissance Detroit.  I booked a room with the intent of using a gift card from Marriot and used my discover because there was no way to use the gift card online. I thought I would use it at checkout.  I called to inquire  the Marriot  told me that was not their web site!  I was decieved and tried to cancel online and it says no cancellation! I have been on the phone for 85 min with this company waiting for them to cancel! They are saying they have to get with the Marriot to get a fee waived! This has been real stressful! I intend on notifying the Marriot gift card because they had no number on the card to call the Marriot!