Dirty mattress delivered - Still waiting for new mattress

My husband purchased a bed from Dial-a-bed Vereeniging on 28/06/2019. The bed was however extremely uncomfortable, therefor we visited the branch again on 01/07/2019 to do a comfort test. We then decided on a different bed and paid the difference. The 'new' bed was then delivered on 03/07/2019 as promised. When we removed the plastic cover from the mattress, it was clear that the mattress had been used, as there were hair and brown marks on it. I phoned the branch to bring this to their attention, where I was then told that I could expect delivery latest 08/07/2019, but still no bed. My complaint isn't directed at the branch, as the service that we received from Dineo was super, my complaint is directed at Dial-a-bed as a company. I didn't spend R 12 000.00 for a USED bed nor did I purchase this bed on credit. It is hard earned money that has been in your account since 28/06/2019 and I still don't have a bed to show for it.