I am so sorry Sena! Thats horrible! The pet store should learn to keep their fish in MUCH better condition!
My local pet store is the same but maybe even worse! Normally they have about 20-30 Betas in a small 5 gallon tank all squished together! It's horrific! Dead Betas everywhere and disease will probably kill them all. Thats why i decided to rescue a few of them. :) I have a 60 gal tank so that should be fine for a few of them to live and not have to suffer anymore!
There's also not much cover or plants in that small 5 gallon tank.
Arn't Betas mostly solitary fish anyways?
Stupid idiot store keeper also ripped me off in the past with WAAAAAAYYY over priced supplies and not to mention, fish(Bettas are being sold for $15-20. yes maybe they are worth that much but certainly NOT in that condition!
People are so cruel sometimes!