Hide extra charges

Made a booking online. Got a daily rate. Returned the car and the following day, I received and invoice for an additional R1,114 for "One-way drop off surcharge". This was never mentioned when I made the booking. It is ridiculous that they can charge this without adding it to the quote. I contacted Europcar and they said that there is a paragraph that states "additional charges may apply". Had they added this amount to the price when quoted, I would not have accepted it! I would be able to have made an informed decision. Europcar personnel is also not willing to assist in any way and just claims that it is my fault. Very disappointing.