Agoda

I booked online through Agoda.com for accommodation at First group magalies park. The accommodation was confirmed and payment made through my credit card. The payment went through i received confirmation of the booking but the dates were not the dates i selected. When i tried cancelling and resubmitting my accommodation request for the dates i want i couldnt make any changes i also could not cancel or do anything at all except to accept the dates that agoda selected. I am extremely angry because i cannot travel onnthe dates selected by agoda and now i cant even change the booking or get my money back. Please dont ever book theough agoda they confirm without alerting you that the dates are not available.