I purchase a hotel stay on completion my card on file was declined. When I tried to re-enter my other credit card the deal was expired. I subsequently purahased another stay through groupon to find out that I Groupon received payment for the first stay and wouldn't return the money for my previous stay. Also I've been trying to get customer service for two days to be told that it's expired! I will never use Groupon Again! I will tell EVERYONE of their shady business practice!