bad bad service - incorrect item packaged and store refusing to exchange the item

Purchased a Duvet at your Table bay store and the incorrect size was in the packaging. I released after 4 months and i never used it the Duvet. Lost the proof of payment and the store had captured my details when i made the purchase, the purchase was a cash purchase and they refuse to assist me.

The error is a Cielo error and not my...now the store wants to blame me for their fault even though i do not have the receipt.

According to retail policy "If you are not 100% satisfied with your purchase, you can return the product and get a full refund or exchange the product for another one, be it similar or not. ... Any product you return must be in the same condition you received it and in the original packaging"

"Stores often try the "no refund or return without a receipt" line. ... But where an item fails, shops do not have the right to demand a receipt. A credit card slip or statement or even the say-so of a person who was present when the products were purchased, are legally enough"