O2 TELECOMMUNICATIONS — Intel MOBILE No. draw

Respected Sir/ Madam,
My wife MOUSUMI BANERJEE have received an sms from TM-CoCaCo on behafe of O2 Telecommunicatios that her mobile no. has won 500000 GBP in on going Int'l MOBILE No. draw in UK. It also informed that inorder to claim email her name, address and mobile no. to [protected]@live.com which we did.Later they asked for her valid identity and bank account details.We sent them a valid copy of her voter ID card and accont dateils also.Then they asked to credit 686 GBP (Rs.53000 INR) as a tranfer cost in the below account.Before doing so, I would like to know the authenticity of this draw and the account in which the amount is to be credited.

BANK NAME: - ICICI BANK
BANK BRANCH: - D N ROAD - INDIA
ACCOUNT HOLDER - MOHMED MEHMOOD SHAIKH
ACCOUNT NO.:[protected]
PAN NO.: - BEDPS5046G

I would be greatly obliged if I am shown the right picture of this whole scenario.

Thanking you,
Somnath Bandyopadhyay.