Then hire someone to deal with customers while the work gets done maybe?
Seriously, Stitchlines is literally open 6 hours a week, Wed through Friday from 11:00 am to 1:00 PM. Who the hell do they think their customers are? Obviously people who don't work regular 9 to 5 jobs.
As for business vs. hobby, I find it really hard to believe that a business that is open to the public 6 hours/week is generating enough money to support anyone's living.
Either they have contract customers (in which case the public business is a sideline) or it's a hobby business and they don't have a reputation to protect or an incentive to please customers.
I should point out it's not just the hours that put me off Stitchlines. They have horrible customer reviews. Most generally agree that the quality of their work is very good, the problem is that the shop is so disorganized that even a simple repair takes months.
I'm sure most of us have, at some time or another, had a similar experience with a LGS or a gunsmith who promised to have a job done, only to be put off by excuse after excuse after excuse. That's the experience I'm trying to avoid here.