Great Holiday Club — fooling people by saying to have won free vouchers

They called by saying that u have won 3 vouchers. 1. Free hotel for 4days 3nights. 2. Free pvr tickers for two. 3. 15000 worth salon voucher. They called us to collect vouchers to their office at mgf mall saket. We went there so they told that there vouches have been finished and therefore they asked for mail id and told that they will mail to us. But it has been 3weeks and i have called them several times but they didn't provide any information regarding vouchers and every time they say that they will call us back after checking it. I haven't got vouchers and they are making people fool.