hotwire inc hotwire.com they booked wrong dates and will not refund me san francisco California

on feb 25-2014 i booked a room for me and my wife for april 06-2014 one night only.

then booked another room for april16-2014.

Hotwire booked the 2 rooms on the same day (april06-2014)

i did not notice till i reviewed itineray before the trip, I then called and asked hotwire to rebook the 2nd room for the 16th.

they said they could not do that as a month had gone by since i booked. they also would not let me speak to their supervisor.

i paid 83.63 canadiandollars for the second room and now want a refund