Funny to see this old post turn up again!
I've been using e-mart mainly because I too have found CS to be a bit useless. They turn up saying they didn't have stock of something like milk - and you know for a fact that you've never gone in there and they've got no milk - it's almost as if the person shopping couldn't be bothered to walk around there and get it, so they just say 'no stock'!
However, e-mart were useless last time I used them - they're usually good at updating the website, but I got 2 phone calls from them after I'd placed the order to say they'd got no stock of things. I sometimes wonder if they order in about 2 cases of stuff and that's it, because they seem to run out fairly often.
But, apart from that, they've been quite good - maybe they were having an off day, or the person who does the website was off or something. I'll still use them over CS.
glad to hear that Carrefour might be starting one up - I'd definitely give them a try (more choice of stuff).