This is probably inventory owned by Wyndham, marketed through Expedia. I would imagine that you could call just like anyone else, subject to any delays for Expedia to let WVO know that the unit is booked.
Check the cancel details carefully. Some expedia rates cannot be canceled at all, others can.
I reccomend booking Bonnent Creek through Ken Price www.vacationupgrade.com His rates are great it many people here on the boards reccomend him highly.
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