Great Fun Rebate Fraud Nashville Tennessee

Bought airline tickets through Cheap O air and was offered a rebate of 50 dollars and all I had to do was a free trial membership with great fun. This was in February and it is now April and I have not received anything from them. I was told the first time I called to cancel that it was in the mail and they extended my membership for free for another 2 weeks. Called again Friday to cancel and was told that I would receive an email the next day for me to print off and send in with my reciept from the airlines and my membership was extended fro another month for free. I guess I will never see this rebate.