I purchased Groupon to book a hotel room and found the date on the receipt was not what I typed in. Since I am a very cautious person so tried to modify the receipt which I received from the email, unfortunately, it produced a second receipt. To avoid further errors, I contacted Groupon immediately( they even do not allow phone calls), after 5 customer service, they escalated to the'' solution team'' and emailed me back 2 days after the coupon expired by saying we can not help you. When I called the hotel I booked and was told never to make a reservation via Groupon and they shredded their shoulder. Despite back and forth desperate messages and emails, I learned my lesson that never uses Groupon, it's a dirty company.