Just got the same email louise2015, smells a little dodgy all round to me!
I have also received that email! Strange that the "winning" email and now this one both came from the South City Bulletin, who ran the promotion. Yet in the latest email it states - 'If you have any question, please contact the participating travel agents directly. They are happy to sort out any issue you may have".
Surely the "glitch" came from the Bulletin who were offering 10x$1000 and 20x$500 vouchers as prizes.
It all seems like a promotion scam to me.