Dissatisfied and disappointed poor service - Consumer Complaint for OK Furniture - Head Office

I bought a sony home theater system on 17dec 2020 and i have already taken it back to the shop twice before 17jan 2021 now i don't want sony or anything to do with sony they do not want to refund me coz i have to wait for sony to give them permission i fail to understand that becoz i bought the sony at ok and not at sony.please fix the matter as soon as possible because i can't wait for sony where as the product was bought ko OK.