NO DELIVERY OF PRODUCT, REFUSE TO REFUND

I bought the cruise line online course voucher, early in September, I waited for about Two weeks for my voucher then realized that my deal was expired before the delivery , the following week I got a hold of Groupon they told me that they would refund me, i waited for my payment a week long i emailed them, they not doing anything about the fact that they took my money. The service is disgustingly poor, no delivery lack of communication, i am really disappointed in the bad service i received from Groupon, i will definitely not ever buy from Groupon again. {:(