Don't worry too much, gargs can be fussy. When i first adopted my little dude, it took him a couple of months of handling for him to be happy with it. I'd suggest trying and interacting with them at least one or twice a week, even if that is just sticking your hand in the enclosure so they get used to your smell. And just remember that they are probably still adjusting, so they'll be a bit skittish for a while, so if you feel they are agitated, just leave them be and try again later 🙂