Passing the buck and saying I am without rights

Whats on my mind. Well I am livid. I purchased a day bed from Rochester Luxury Living Mall@Reds in Centurion mid-August. It took a week to be delivered I think. Anyway mid-December I phoned them to tell them it was faulty and they said they could not pick it up as the repairs would be going on December holidays. Well they finally pitched to pick the item up on the 2nd Feb and told me it would take up to 6 weeks to repair. 11 - yes Eleven weeks later it comes back and has been damaged in transit.... I want a credit as it was badly damaged and they don't want to budge. They say my CPA rights are waived in this instance and I would have to pay a 15% penalty. What a load of shiiiit. Can anyone help?