I ordered a "wine tasting." For 6 days the purchase said that it was "processing." Finally, once I called them to figure out what the status was, I discovered from the very condescending Groupon representative that the purchase didn't go through. She put me through to someone in their billing department who requested my credit card information which I did not want saved in my Groupon account nor did I want to give my credit card details by phone.
To further add to my negative experience, the only way to close the account is by emailing Groupon. It doesn't end.