The solution is regulation. We should have a rule along the lines of "you can only be charged once for a service". Meaning, if you charge me for a car rental an

The solution is regulation. We should have a rule along the lines of "you can only be charged once for a service". Meaning, if you charge me for a car rental and I have successfully paid, then that's it. You can't then hold back the service because you need a second charge. Same thing with hotels. If I book my hotel on Expedia and pay the charge there, you cannot charge me again when I show up to check in.