HOUSE, BEWARE OF MTN TREASURE HUNT FRAUDSTERS!

I got a mail from one mtn customer service centre informing me that i am one of the winners in mtn treasure hunt that has been ongoing. I know i did not play the game but i followed the link they gave me with a pin no.
On filling my personal information, i was asked to give me bank details for cash transfer and this included my atm number and my atm pin number!
That was when i sensed a scam, mtn should not be asking for ur atm pin number!

House, what is ur view on this?