Bad quality and even worse aftersales!!!!!

I bought a pair of sunglasses at a pop-up shop of Falco Milano on 16 December 2023. I am not from JHB but I want to return the sunglasses because I am not satisfied with the purchase. Besides them really not being good quality and flimsy for the R1000 I paid, they also claim to be polarized? This "feature" , when you wear it and for example look at your cellphone screen, has a "prism" like effect and makes me feel off balance and car sick. Since the Sunday, 17 December 2023 I have been sending messages to the email provided, on messenger on Facebook and tried to phone them...NO ANSWER. I want them to advise on the process on how to return the sunglasses? I only have the 15 day return policy and it seems as if they are deliberately ignoring my requests that will ultimately result in me being disqualified from returning the sunglasses for a refund!