I get most of my birds from Ideal. I've always been happy with them. :)
Feed stores are notorious for mixing up chicks and it's not always their fault -- I've actually seen chicks jumping to the top of their bin and jumping down into the next bin on their own with no assistance from customers...
White Rocks, probably.
Red ear lobes, combs too small for leghorns, and not laying yet.
Sorry you didn't get your Delawares. I love Delawares and they've been hard to come by the last couple years.