Looksmart advertises a guarantee that if your hemming isn't complete within an hour, it is free.

I took a pair of jeans in and was ignored for about 5 minutes while I waited for service. I came back 24 hours later and the job still wasn't done - yet they refused to do it for free. The staff member insisted they would do it on the spot instead and quickly ran the hem. When I got the jeans home I found that they had made one leg shorter than the other and ruined my favourite jeans. Don't risk good clothes with this company.