If you got White Leghorn chickens, they will always be "terrified" of you. They are the craziest chickens out there. They have been bred down to lay pure white eggs, but obviously not for a brain.
The darker breeds are less panicky and are even pet-able and some even like to "snuggle" with you.
Are you feeding them laying mash?
If you're EVER in doubt of your seller, don't buy from him/her. These days, there are thieves and racketeers of all kinds out there. Want honest buys, go to Tractor supply or any reputable dealer, not some jack-leg waiting to nip you. Lack of the fear of prosecution has given many hucksters a feeling of carte blanche and it isn't worth the money it costs to get YOUR money back, so just be careful.
If you're not satisfied, tell them you want your money back, because the sale was misrepresented. If they don't capitulate, spread the word that they aren't good people to deal with. Hit 'em in the pocketbook.
(OTS: I was wondering... Does anyone else use fine-crushed oyster shell as a "side dish" for their layers?)