Bad customer service

I experienced worst customer service from Woolworths Attlyn mall. What transpired is that this afternoon I went to your store to return (white) formal shirt worth R499.00 still in the condition that i initially bought it - I was intending to exchange it for a gift voucher as opposed to cash. I humbly explained this to the consultant by the name of Katlego who was at the teller station and I was also clear that i unfortunately misplaced the receipt that I was issued with upon making this purchase but the teller tried to explain to her manager by the name of Clansina Makhubela was not having none of my explanations and she mentioned to me that u can only return goods to the value of 200 rands only if you do not have the original copy of the slip and I asked since when because woolies states that if you do not have a receipt you can return goods but you will be given a voucher , I found her to be dismissive, cold and condescending towards me and plight.