Bad customer service

Hi on the 29th Nov 2020 i bought a Russel hobbs microwave at pick n pay and within months it started to give me problems then i called them last year before the 29th Nov to notify them about the problem am having with the microwave and they where like its fine i dont have to rush it i can bring it anytime so on the 9th May 2022 i took it to pick n pay woodmead that's where i bought it and i was told that i must leave it there they will go and check it then they will get back to me so even today am still waiting for them to call me because they even told me that they will charge me so since i dont have a microwave and they haven't called me yet to tell me what is the problem so which means i gave them my money for free because thy haven't came back to me yet its almost a month and i was told that they will call me on a Wednesday because when i went there it was a monday i even called them to ask but i was told that maybe its at a storage they will call me back as soon as they have checked it so even now