I'm surprised by the reviews here.
I've been using these guys for a few years with consistently good, friendly service. I get shirts, sweaters and pants done here and am in a couple of times a week. I know a number of the boutique shops on Queen use them for for quick, basic alterations.
Can't say what's up with all the other reviewers and I see no reason to stop using them. If I'm in and there are other customers exchanges always seem as friendly as I'm used to.