Beware "Sealy Quality ??????"

Sealy matress bought May2017 collapses Jan 2019. Sealy send their inspector out (3 weeks after reporting the problem to their outlet in Fourways). Inspector advises that the reason for the collapse is incorrect material size used in manufacture. I then get a phone call advising me that they will replace the unit but I must first pay in excess of R2000,00. What sort of company is this? They sell a matress with a manufacturing fault which should have been picked up by their quality control and then hide behind a "warranty" the conditions of which do not appear on any of the documents at time of sale. What a CON!!!!! Back to sleeping on a Simmons bought in 2011.