Complain about homechoice

I bought a bed base and mattress at homechoice in 2017 November, I was happy and excited that I bought Restonic mattress and Restonic is known as a company selling good quality products, but unfortunately my experience I have received about the bed I can't say anything nice about it. I'm very much disappointed with the product received. I only used the bed from November until the beginning of April 2018, thentgr bed started with funny noise. Sagging, Squeaking/noisy, stitching pulling loose and wire protruding. I reported the bed to homechoice in April and they changed mattress and gave me the new one inJune. It also lasted for 6 months. In December I reported the mattress that was changed in June with the same problems as the previous one. I was told they will communicate with the warehouse for an exchange of the new one. Now the warehouse which is Restonic they requested me to pay R862 for them to change the mattress for me because the guarantee or warranty is for 12 months. I'm paying lots of money for that bed. It cannot be my fault that they are selling us **** products. Its homechoice responsibility to ensure that everything is handled accordingly. They are the one responsible for **** products they should pay that R862. I found myself in a situation that I hv to pay the amount requested by Restonic because I'm the one sleeping on a bed that is not comfortable. I really did not get value for money with that bed. Homechoice has really disappointed me, and they are not even taking my situation serious. I have been a good customer at homechoice until I bought that nonsense of a bed. I don't trust homechoice anymore.