As an ex shop worker and mechanic, i’d be highly apologetic, take the bike in for another once over, arrange a time to do it on the spot if need be, and work out some form of reimbursement or shop credit.
That’s where my expectations would still lie.
I’ve experience of spannering in a big chain and a teeny LBS, the big chain store did actually have a thorough tick list you’d sign off during/after the job, was actually really at ensuring everything was atleast safe. In the teeny LBS, processes were less established, more on your own head be it, so i just resorted to doing the job, do a test ride, hops etc, trying to loosen anything, then another retighten of every bolt front to back, a second person would often repeat this second check.
I guess it’s down to the individual though, they might have just been having a busy day, someone off sick, shop full of agitated customers, deadlines to meet, interrupted in the middle of the job.