Chevron internationa mobile award
Is it true or not

I have got a message in my phone saying i have won GBP 5, 00, 000 in 2009 CHEVRON INTERNATIONAL Mobile draw and they have sent me a pin number.

I have replied to them and they suggest me to claim the price from england or else contact "SWIFT COURIERS" with my pin.

I have done so and got an email from the couriers sayin that their officer will be here in india anydate from 8th june

I want to know the credibility of these two companies since i have sent my scanned copy of my original driving license

Do these things has got anything to do with terrorist links, hawala money etc.

Please help me i'm scared...