Dear sir, i received a confirmation from the US visa lottery department congratulating me of being a winner.i was asked to pay a sum of $880 as my processing fee via this address in UK, as below;PAUL RYAN, 24 GROSVENOR SQUARE LONDON, W1A 2LQ, UNITED KINGDOM.Please verify the address is a recognised one.And wheather he is an Agent of the visa department?My contact number is +233267374304.I will be glad to hearing from you soon.thanks.