won but couldn't claim my funds

i been playing lotto on line so I recieve this email from United Kingdom national lottery email I won but can't claim it I had to pay a fee through WesternUnion,MoneyGram I had to contact Alex williams -mwact@e-mail.ua I still haven't received any money or what going on the national lottery United Kingdom on line sweepstakes international program held on January 09/2016