Well, not just raisins and papayas, but they certainly help
Patience and gentleness is the main thing though. Remember, these are animals that in the wild are eaten by most things larger than them. They are naturally cautious and have a heightened awareness of danger. And please remember ONE SMALL treat per day, no more. Anymore than that will make for a sick chinchilla.
As for the sleeping thing, yes when they are fully asleep they have their eyes closed. Since they are nocturnal, they are naturally inactive and lethargic during the day. Many of mine take cat naps throughout the day though, waking for brief periods of time to look around. But they do tend to stay very still in one spot. I guess it's not sleeping so much as resting. Again, we go back to the sensitivity to dangers around them. Your chins are in a new place, with new smells, creatures, noises, all of which are potentially dangerous to them. My chins all wake immediately if they hear a noise they are not used to. They have learned what normal household noises sound like, and don't pay attention to them, but anything new instantly gets their full attention while they are deciding whether or not it is something they should hide from. Right now, everything about you and your home is a potential threat to them, so they are going to be VERY cautious about all of it, which means not wanting to be handled or restrained, not wanting to be cornered or trapped, and being super aware of everything around them.
After a while, if you give them time to learn to trust you, they will calm down and get used to their environment and to you. Then you will be able to get all the chinchilla affection your heart desires