We tried to use these vouchers on two different occasions and found the establishment closed both times. The first time, "they had not opened yet" even though it was after their "opening date". The second time there was a note in the window stating they would not be re-opening. Contacted Groupon who contacted Yummy's Frozen Yogurt and was told to "call" them. We did, and they were supposed to call us back. That was a week ago and no return call. No Yummy's. No Nothing.