Mult Light grey LHF Couches.

Recently bought beautiful couches early this year and started using the couches in April as soon as i moved into my new house. To my surprise before even three months the couches started losing shape and they started sinking. I logged a query with the store where i purchased the couches form and they requested pictures and invoice to proof that indeed I did purchase the couches. which i did with no issues, thereafter I was called and informed that they will send an assessor in order to assess the damage. the asser came last week on the 14/06 and sat on assessed the couches. he indeed gave feedback and advised that the issue will be referred to the head office, however in the meantime we can go to the store (Kolonade mall) where the couches were purchased to do an exchange as we were no longer pleased with the same couches we have. to my surprise the asses had given recommendation on what he assessed and what was the conclusion with us the customer on the a form that he completed. which i signed in agreement. to my surprise the following day which was on the 15/06 my Husband received an email stating that the query is closed and they gave us a lame excuse of why the couches are sinking. we then disputed the issue and sent them a copy of the signed assessment form and to this date they have not rep****. I must say we feel that our right have been violated and are not taken serious as we cant buy a couch that cost R26k which we are not happy with stated losing shape with 3 months. we need the issue to be resoled and no longer trust them anymore and requires for the couch to be returned and be given our money back. the trust id broken and we can no longer continue with the relationship with the store.