Worst customer experience and refusal to take back item on a claim that i damaged it

I bought sunglasses at their cradlestone branch while traveling i got home and when i tried on the glasses they seemed too big and were falling off my face i took them back at their fourways branch and the lady that works there Thembi Machika was very rude and discerning. She refused to take back the sunglasses saying they have a scratch and said i need to take them back to the branch i purchased them from, now she spoke about me signing for terms i do not see anywhere on the receipt where it says a damaged item must be sent back to the store it was purchased from now what if i traveled out of Joburg what then.I never wore them i Teach your staff members the value of customer service and treating all customers equally she was on the phone the whole time chatting to her friends and not even bothered that she has a frustrated customer.