I recently went on a holiday that was organised through a travel agent. The travel agent booked a car hire through a company at our destination on our behalf. We stipulated we wanted to pay in full prior before departing for our trip and I was sent an invoice detailing the amount due to be paid. I paid the amount in full, the vouchers for the car hire were emailed through and off we went. When we arrived at our destination to collect the car, we were charged an additional one way drop off fee. We begrudgingly paid the fee and continued on our holiday almost $1,000 AUD out of pocket. Once we returned we brought up the issue with the travel agent. I went back through all my emails trying to locate where this fee was mentioned, however none of the paperwork provided mentioned the fee. I eventually located an email that mentioned the fee however it was sent amongst invoices and additional information on the car hire company sent some days AFTER we had paid the invoice. As it was not mentioned in the original paperwork and was sent to us as an afterthought once we had paid the invoice, are we entitled to a refund under Australian Consumer Law or are we stuck? Thanks!