Hello, the shopify-powered website hypepostersco.com uses bots to fake reviews, and sell posters that are in reality not physical, then blatantly ignores all requests of refund even when you’re supposed to have one. Could i have my money back ? I don’t want the hassle of a lawyer but i’ll do it 
Welcome to the community and sorry to hear about your bad experience.
You should report it to Shopify at
https://www.shopify.com/legal/tools/report-an-issue/report-a-merchant
under Issue with an order and give all details.
For refund best to contact your bank directly but they would also need some documents.
Good luck