Poor refund policy regulations

I am very disappointed with PEP Home Greenstone Mall I bought fitted **** and base cover but unfortunately wen I got I couldn't fit on my bed, the rude manager by the name of Cleo said unfortunately we cannot exchange them for you because the plastic pack is damaged so they won't exchange. My question is if the product will is not damaged but plastic so u cannot exchange. How is it our fault that they cannot replace a placstic pack. Is not my first time making exchange but PEP Home you need to fold or pack their products the same way u found it when you buy. And the so called manager was so rude Cleo. no apology nothing just the fact that we cannot exchange because of the plastic pack damaged . If this is a new regulation for PEP then that's not been fair. Some shops must then close because they create their own regulations. Is not my first time changing bedding because it depends with the shop cut so some size can fit. I exchanged bedding with I shop before and I was never told about packaging. If there slip and and the goods are still fine how is it possible to loose your money. And Also pep home my improve on their customer service if I was assisted and advised I was gonna take the right size. I hope this can be resolved cause I know I'm not the only person had to deal with this kind of treatment. And I would like to see your refund policy about packaging your good also. Thank you