Consumer Redressal

My complaint is against 100bestbuy. I have participated in the contest nokia lumia contest with reference no.27328936. Site says on every 15th Results will be declared, otherwise amount of Rs 599 will be credit back in your bestbuy account in terms of points which can be used for buying from site. I waited till 15th Dec, i have not got the nokia lumia and when i am asking for points to be credit in my account, these sites team is cheating people, their customer care team says that 599 points are credited in account which i am not able to see when i logged in my account. But, when we buy and not able to see points we get call from their marketing team they says product you can buy by paying COD. But, no points are showing in your account. Pls help to get the refund of Rs 599 or credit point in my account.