I bought a Yokico schoolbag in August 2026 and today is 9 September, the Zip is default and they refused to replace it or refund it and a shop assistant with an attitude

I bought a Yokico schoolbag in August 2026 and today is 9 September, the Zip is default and they refused to replace it or refund it and a shop assistant with an attitude. I sent this matter to consumers board.