Report the conditions to your local Animal Control.
That pet store has under cover animal control officers in there ALL the time.
I have seen and reported far worse stuff, nothing gets done.
Like I said I worked there I know how it works behind the scenes.
They stand on chairs and drop puppies and dont take them to the vet, they have puppies fall from the top cages and they dont go to the vet, they have sick dogs that dont get treatment.
Some how they are still open.