Refund/Tampered proof sticker, tampered with

Always check the check the tamper proof stickers before taking anything from this place, save yourself a lot of trouble do not buy it from them. 9 June 2026 I went off to collect a device I purchased online at the nearest branch, I received the item, in-store upon further inspection of the electronic device box I noticed the tamper proof sticker at the bottom of the box has been tampered with, I immediately informed the team at customer service desk and they tried to assure me it was not opened and still sealed despite the tamper proof sticker being lifted and pulled back and unable to stick again, after going back and forth on the that, they asked a sales representative to bring a "different pair of earbuds" from the display on the show floor, "this second pair" of earbuds has the exact same thing going the sticker at the bottom of the box was already pulled back and it showed clearly, it is a tamper proof sticker that's the purpose of it, do not open the box unless you have bought it. I immediately requested a refund. Thing is I have not since that day received any form of correspondence from hifi corporation initiating a refund, I have contacted them through various channels, and they will not acknowledge a refund initiated in any form of correspondence, where exactly do I go to make a case against these guys for violating my consumer rights, the guy took the earbuds at customer care, I gotten an email immediately saying i received them no correspondence saying I immediately returned the item and want a refund. I need to make a case asap what's the route.