I was at a daycare that was a bit like that.
It sounds like a crap place! I'm so glad your little one is now ok.
The staff are probably not supported and have crap systems. You could write to the director...but even better if you could, make an appointment to see her, and tell her. Cause they'll just ignore a letter ... won't they? They should know how it made you feel, and see your side of it. anyway, not having pegs and pix on the wall IS a big deal, cause you start to wonder - hey do you guys even know my kid is here?? And It sound like they weren't experienced enough to look after an upset child.