The Worst Customer Service for a Couch Repair

I bought a lounge suite from Double click in Horison Village, Roodepoort, in February 2021. It was a 3-seater, 2-seater and a 1-seater suite. In January of 2022, I reported to the supplier that the 3-seater needed repairs. I was asked to supply photos of where the fault was, which I did. Each time I followed up, I was told by the shop manager Madeleine, that she was waiting for the factory to approve the return of the couches for fixing. Eventually, they finally collected the couch in June of 2022. To date, I still have not received my couch. Each time I follow up, Madeleine tells me she will follow up and get back to me. To date, I haven't heard from her. She never bothers to update me. Each time, I have to initiate the conversation. There are also WhatsApp conversations with Madeleine and even that, she has not paid attention to.

To add salt to the wound, my 2 seater has the same issue, and I don't trust that they will attend to that problem either as this 1 couch has taken so long. Basically, I have not enjoyed using the 3-seater since January of this year and have not enjoyed the 2-seater for a few months also.

Please advise of what steps I can take.