not replacement lenses but a colleague of mine where I used to work asked the oakley rep when he came in one day to arrange a "surface polish", apparently oakley customer service here in the UK is excellent (or it could be that oakley are really nice to Leekes where I used to work, their sportswear dept. usually is pretty well stocked with O gear for a dept. store but theres only one store in England, it's in Melksham).
I'm glad I could help, good luck with getting your juliet lenses, the other alternative is eBay, what colour are you looking for?