I booked my reservation through Expedia and cancel...

I booked my reservation through Expedia and canceled it before the cancelation date through Expedia as I was suppose to. My card was still charged for the full amount even after I received a confirmation email. After I spoke with management to refund my money they turn around and put an authorization for another nights stay on my card. So, they have over $700 out of my account causing me to overdraft. My account was in shambles for days and they refused to refund my overdraft fees bc it's not "policy". It may not be policy but its your fault that this incident is occurring. I fulfilled my responsibility of cancelling in a timely manner but still encountered basically unauthorized charges. I really was looking forward to patronizing this establishment but after this experience I won't be.