about a month ago that same incident happened to us..as we were about to leave Doha city, a Lebanese guy (if i'm not mistaken) near the exit door called us to discuss something about free holiday given to 20 families (10 for arab, 10 for asian)only for that day..it was about 7pm and since we were not in a rush, we listened to the guy..to qualify for the promo, we were asked to give 5 Arab countries ending with letter "n"..so we started thinking and gave him about 3 only, he even gave us hint on the other 2 countries..so we won..he filled up the form for us but to claim the prize, we must go to their man office..my husband got suspicious about it and said that we cannot go..there were 2 guys there and the 2nd guy told the guy who was talking to us to finished the conversation (maybe he was thinking that we will fall in to their strategy of making us feel that we lost by not going to their main office)..so we walked away..i was actually feeling sorry about it but after reading this forum,, i was glad that we didn't go to their office..