why didn't the foot doctor place tell me they were closed the day they gave me my appt?

I was supposed to go to the foot doctor place, I had an appt to get my toenails cut, I see a foot doctor there too cause I've had fungus on my toenails, they're almost gone now since ive been using probiotics and garlic, those kill fungus, my appt was yesterday, when I get to the place noone was there, I took a paratransit ride, I don't drive, I went to ask this other place that was in the same bldg why there was no one there, I don't think they knew, it could've been cause of the holidays but they should've called me and rescheduled it, then they get mad if others don't show up when they do the same thing. one of the other ladies I was asking about why the place was closed offered me a ride back so I cancelled my bus and rode with her so I wouldn't have to wait so long for the bus to come back, so why is it places like that don't like it when people don't show up but they do that themselves and I had a dark line on my toenail I wanted someone to look at cause I heard that could be skin cancer but couldn't see anyone, thinking of going somewhere else since they cant respect me enough to let me know no one will be there, has this happened to someone else too?