I have few petstores off the top of my head that give their animals bad care and give bad customer service:
-Adam's Pet Safari=When I first went here, I saw only but sick animals. I saw cane toads placed in a dessert terrarium with skinks, empty waterbowl. Lethargic animals such as beardies, snakes, "jesus lizard", plated lizards, you name it they had it. They had a small terrarium of 10green tree frogs. I saw a skeleton on the sides NO JOKE. It was a real treefrog skeleton. They were mixed in with green anoles. I saw another tank with bufo virdiris, european common toad, cane toads in a 20gallon. The feeders were sick as well. Dying fish. Not only was it bad quality animals, but the owner was a racist, sexist, greedy person. His staff consisted of two kids around the age of 10, Iam assuming his kids. They were rude and obnoxious. Then an old man who was impatient, unknowledgable and just plain rude.
-Petgoods=I worked there to know enough about this place, dear lord. I can only describe my working experience as horror. Cricket bins containing other insects, over priced animals and tanks (goldfish that cost 20cents put em up for 5-10bucks and most die in the week), animals filled with parasites, some birds died while i worked there, Painted chubby frogs stuck in a 2.5 gallon. Getting animals that are sick and wild. Even one of the person in there confide in me that these reptiles and amphibians are mainly all wild caught. Same with most of the fish stock. Only plus about this store was the furry animals. Not even that they put them in pine aspen bedding. Buying wild caught ball pythons, these snakes were nasty tempered. Not only that but one escaped and was found in the stockroom dead and bleeding. The other time a snake escaped it was found again back in the stock room, it wasnt dead but the manager didnt know what to do so he just put it in a trash bin for a while and dropped in a few live feeders. Then the snake was found dead. The fish tanks were always getting ich, velvet, you name it! A coworker used to flick the small animals in the face because they "misbehaved". Same arrogant person told people they could put in goldfish in a 10gallon aquarium with plecos. I had bought a rabbit from there, she is afriad of everything. She warmed up to me to an extent. My friend/coworker bought a hamster from there. Same night it died. He currently now owns a frog bought from there. Now I worry about the frogs condition because sadly he doesnt know much about amphibians. Trying to currently teach him, he is one of the employees. I myself a long time ago had also bought two fire bellied toads, one chubby frog, a ton of fish. Just to see how itd play out. First firebellied toads after a week of being in the terrarium, one died out of being crushed, and the other died out of nowhere. Only frog I bought from there that is doing okay was the chubby frog that I gave to my friend as a gift.
I can only describe that store a concentration camp for animals.
-Petsmart: Bad service, dying animals, bought goldfish from there one of them carried a parasite and killed the rest of my goldfish by the next day. They put in fiddler crabs with firebellied toads. Veiled chameleons in 10gallons. Whites treefrogs housed with toads. Unknowledgable workers.

-Pet supply=fire bellied toads placed in a fully aquatic tank with newts (same thing happened at adams). Rabbits overcrowded in a pen with only one dish of food and one bottle of water. Had 30rabbits in it. Fish department had ich, velvet, parasites. I asked questions to test knowledge. They told me I could keep pacus in a 55g for its whole life with 4 other pirahnas. Telling me I can put 3goldfish in a 10gallon aquarium. The guy was literary drunk at work, lady was rude, obnoxious and unknowledgable.
The other petstores also were bleak, seemed like a death trap. This gets me depressed alot. Like I cant do anything about it. ;----;