We used the Avis coupon code A153700 at the end of August to reserve a premium car, without knowing that this was the employee discount code because our friend passed it to us. At the time of pick up, the agent told us we were not eligible for this code. However he did let us used it and we signed the contract. A week later when we returned the car, they took the code away and basically doubled the price. We felt it absurd and didn't sign the 2nd contract. Now we got collection letter from Avis asking for payment for the additional charges.

My question is, is this one worth fighting for? Does the first rental agreement become binding contract once it signed? There is no clause in that contract that said anything about coupon codes. Can they trick customer with a cheap rate at front to get more business, then jack up the price afterwards?

Thanks for sharing your thoughts.