The service is perfectly fine (although no significant advantage over Amazon) until something went wrong with a billing issue. Then the wheels fell off. Our bank saw a repritive change (that was legitimate) and bounced the charge. Now, if this happened at Amazon, the access to that particular purchase would be removed - they would say there was a problem with the collection of payment. But Vudu suspends the entire account without notification or even a good process. They then make it your problem to get access back.
That brings you to support - which as many point out is woefully unresponsive. If you are going to shut down someones access to something they have BOUGHT you need to be very very good at getting them back up again. They don't really seem to care - it's your problem. Hint, it's their problem.