Poor customer service from Calvin Klein menlyn park.

I bought a t-shirt on the 25th of November that was on the normal price and chose the item from the floor with a different size that was not displayed on the floor, okay I went back to the store 2days after I realised that it was having stains at the back,a white t-shirt with stains like I can't buy something and washing it not knowing if the stains will go away Or not.when I got there I found a guy who helped me with the Ibt from another store and he said it's going to take a week.i never received any calls from the store to update me instead I went to them and their manager gave me attitude and telling me about the no refund which i didn't say I want.i was willing to swap with something that they have instead the manager told me that it's not their fault that the Ibt is not done yet after 8days of no feedback from them.like he even stopped me from talking by telling me that I should wait for him to finish up assisting another customer as if I found them talking while the other customer found me there.like I'm really hurt to see a Guy with so much ego to customers.The Lady who assisted me in the first place she was a darling but the end is not nice.