Bad customer service and poor quality

I bought a bed Restonic Barbados at Sleep Master at the Crossing shopping center In Mahikeng, just before lockdown we realize the the sides of the bed are starting to sink and we are turning it regularly, than we could report it because lockdown started then during lockdown level 4 my wife went to report it they said that there is nothing that they can do at that stage we have to wait for level 2, than I went back to go and do some enquiries again as the bad has become so bad that you can't change it any more, than n person from restonic phone me during the month of July 2020 telling me that they will come exchange the bad and there won't be any inspections done due to Covid 19, last week on the 10 August 2020 I went to Sleep master to go find out what the delay was and I was told they take so long for exchanging, I must wait til Friday the 14 August 2020 if nothing I must come back to the shop, so today the 18 August 2020 went to enquire again just to find out that I had to pay a R700 for exchange and I was not told in all these time of enquiries and phone calls from Restonic and Sleep MASTER. NOW AFTER FOR 4 MONTHS OF UP AND DOWN THEY WANT TO TELL ME ABOUT N R700 WERE THEY SOLD ME VERY POOR QUALITY OF PRODUCT, I bought a restonic more than 10 years back and that band never give me problems this one has not even made 2 years and than its finished. Very unhappy client of poor quality of product plus being missed informed and waiting for promises that was made.