Zalemart violating consumers rights with false information

Being ****med money by Zalemart. I ordered denim and a diffent size was sent to me when i lodged a return i was told the size i ordered its the correct one in another country. What nonsensical thing is that. How is it possible that the size ordered online is different when delivered and told its another country size. ****med and want my money back. According to CPA what you put on a product is what a consumer must pay for and not something else.