not willing to return their rejected stock

hi i am a bit annoyed. i just purchased a dress at ally cat Durban , when i came back to my office i see that it had alot of holes at the back (major reject) being a factory shop they did not have a sticker indicating that. i went back 10 minutes after buying it , and told them about it, i said i would take anything else in the store. the guy was rude, he pointed to a board saying you buy clothes as is. however we have a consumer law that states that shops are not allowed to say no returns , they need to give the customer options.