Poor quality bed and poor customer service

I paid for my Restonic Bazaruto Queen Bed on the 30/09/2024 at Sleepmasters Kimberley branch in Kim-Park. The bed was delivered on the 4/09/2024, on the first night I immediately noticed and felt that this bed surely can't be a new bed worth R6K as it felt worn out, when I slept on it I sank inside, then I started to change sides every single day, and as the days went by my hip, back and shoulders started to experience pain from the uncomfortable state my body was in, zero spinal alignment. My old bed sleeps much better then your supposedly new bed, there was no zooming into the mattress as deep as I feel now with this poor quality bed. So on the 30/09/2024 I inboxed Sleepmasters with the complain to have the mattress changed as the sagging was now worse, I mean the mattress was not returning to it's original state when I'm not sleeping on it. The branch asked me for pictures and I sent them to log the complaint. This morning 03/10/2024 Restonic asked for the pictures and just after 18:00 I received a response that the sagging is not 4cm deep and the mattress won't be replaced, I must just rotate it. I mean this is an inflatable bed, regardless which side I sleep in, it's sagging, and how on earth do you measure sagging on a picture, besides, the sagging of bed it was poor quality from the start, rotating it won't help as I am changing sides everyday which I did mention in my complaint. I am so unhappy and livid at the state of this bed, and this is within a month of sleeping on it. The audacity from your company to tell me it won't be replaced. Please refund me my money back if you don't want to replace this nonsense of a bed, I will deliver it to the Kimberley store, there is absolutely no way I will go buy a new bed to replace this one because you do not want to replace it, I refuse to sleep any day longer on this poor bed, I'd rather sleep on my couch as it's of better quality then this hole of a bed. You do not deserve this one star rating, a negative best suits you. If it's drama you want restonic, then I will certainly give it to you in hundred folds.