I've experienced this several times, and it's very frustrating. I know you really can't do anything about it when you purchase with App Store credit, but I'm cu

I've experienced this several times, and it's very frustrating. I know you really can't do anything about it when you purchase with App Store credit, but I'm curious... does anybody have experience with doing a credit card chargeback in such a situation. It would be good to know if that can be a successful means to resolving an issue where Apple puts up unjustified roadblocks.