Sleepmaster.Norton bed - Inferior Quality and.Terrible after sales

We bought a Sleepmaster Nortom bed on 12th April 2019 for just over R4000.00. I had to undergo a medical procedure in May 2019.which resulted.in me not using the bed till October 2019. On sleeping on the bed I found it incredibly uncomfortable and raised it with the store. Inspectors came to the house on 18th November 2019 and agreed that the needed to be changed, this was confirmed with a.call from their offices, and promised that a.new bed will be delivered. This has not been done. I am a pensioner and recently underwent hip replacement surgery and am unable to sleep peacefully on the bed. After having taken my money and establishing that their product is faulty, why should I be kept to sleep on a.couch at my age and under these circumstances. This is unacceptable to say the least. In a few weeks.it.will.be a year.that I have.this.product that I barely used and cannot use.due to.tje poor quality.