POOR QUALITY CORICRAFT SANTORINI SLIPCOVER LOUNGE SUITE

I recently purchased two double seater and 1 single seater Santorini slipcover couches from Pietermaritzburg Coricraft After waiting 8 weeks for delivery as the single seater had to be made I am very disappointed with the quality. The density of the cushions on the couches are all different from being very hard to extremely soft. This is unacceptable as I specifically chose the said items because of their comfort I felt when sitting on in the store I have had major back surgery and the couches that were delivered to me are far from what I experienced in the store. They actually hurt my back How can the density of 5 cushions vairy souch