You should have chargebacked. Unless it was 100% unambiguous that you entered into such a contract, the credit card company will side with you. Edit: I've only

You should have chargebacked. Unless it was 100% unambiguous that you entered into such a contract, the credit card company will side with you. Edit: I've only had to chargeback once, in a situation that I tried to work out with a vendor. Other times, I've had to threaten a chargeback to vendors who didn't deliver promised goods.