Does yahoo do lotto.i recieve a mail saying i won yahoo lotto and i have contact yahoo agent in s/africa.?

pls i want help on how to clam the offer i was told i won as a category A winner.also i was asked to clam the found within 30 days and thi is the 24th day pls i want to know if it is ture.the mail was sent to me by your agents and also want me to contact your agent in s/africa.thanks form chiboy 222@yahoo.com