i have got a call 3 times on my same landline number in different times of the year,person says that u have won a cultus/alto etc by participating some how(their long stories) ,once he assumed role of manager in MOBILINK as well,n then they say to know the details call on this number,he is our manager,n that manager person later on says that to recieve ur prize u have to pay some fees,for that get some mobile cards,scratch them n send them to us....
first them i heard all that non sense but didnt sent any card,confirmed it from mobilink's helpline,n when that person called again,abused him 
the other 2 times when new persons called for the car scam,i didnt heard the non sense n again abused him greatly....3rd time i simply ended the call.........
they even know the name,address etc........some ppl may fall for this,but its quite obvious y u have to pay a fees to get a prize