We hired a car from Avis via a 3rd party so paid for everything inc insurances up front. We refused their add ons on arrival. When we return the cars we were told no charges and then they had a small screen for us to sign on. Anyway upon returning home we were had a charge on each car - both totally different prices. We were then told that it was for loss damage waiver, location fees and VAT and we had signed the agreement. So they lied to get us to sign. We should have checked the paperwork before we left the desk but they take advantage of the fact you are focusing on getting your flight and we took them at their word. One car chatge was £25 and the other £108. Tried to argue to as why would we agree to pay for something we already paid for but we havent been successful. Please double check your paperwork and dont trust them.