http://elliott.org/should-i-take-the-case/dinged-using-fraudulent-discount-code-avis-rental/ 'This code did not originate from a third party. The discount system was conceived, numbered and executed by Avis. It is its responsibility to create an easily audited system. After all, credit card companies can approve a charge in nanoseconds. So too, it was Avis responsibility to administer this discount with fairness to consumers.
"After the fact" is not a way of life in the security business. The code should have been approved or rejected at the outset. If it could not be, then it was Avis' fault for inventing such a faulty marketing program.'.
As such they had every right to refuse me the sale. That they went through with it without checking and dispatched the items is not my fault.