The only store here that sells bunnies was doing the same thing — the owner’s wife felt hay was too messy. I pitched a hissy fit about it one day and even offered to pay for the hay if they’d put it in there. Even explained that putting hay in there showed people that bunnies eat hay and that it would help them sell hay. Nothing.
I went in there a few months later and the bunnies now have hay. While I HATE that they sell bunnies, the ones they get all sell within a week and one of my bunnies (Kieko) came from there (my son used to work there a couple of years ago) and she’s always been healthy. Again, I hate that they sell them, but I have to give them a little credit since they’re now feeding them Oxbow Junior Rabbit food and giving them decent hay, even if it is so they can sell the other products. They still hate to see me coming because I check out the animal section carefully, and I try to only buy things from them (litter) when it saves me a ton of money on sale.
As long as the animals are kept in clean cages and are being given pellets and water, they’re not considered neglected so there’s not much you can do. My advice is to bug the crap out of them (without getting thrown out) and butt in when you see someone looking at the buns or bunny products and educate the customer yourself. Its rude, but if it results in the bunny having a better life, then WTH.