Decofurn Centurion Failing to deliver on their promise

I made a Lay-by at Decofurn Centurion Branch (Lay-by No: DECCEOLAY0894) on the 3rd of November 2020. The agreement was I will have to give them a month notice before I could receive my lay-bye. Early January 2021 I went to the store to inform that give them the 30 notice and I was informed that I would receive the products mid February. I have been going to the store since and every time I go there the manager of the store (Ivan) will tell me that the delivery will be made the next day. I still have not yet receive anything and when I asked for my money back I'm always told that the delivery will take place. Please assist me with regard to this.