Terrible fabric on couches bought

I ordered couches online and had shared a picture of the couches I wanted. They were going to customize them for me the way I had requested with the colour I chose. The couches were delivered yesterday and honestly, I am not happy with them. They said the picture I sent to them of the couch was the same as their Modena Modular suite and has an extra back rest piece and ottoman. The couches as much as are modena, they are separating when sitting on them (They supposed to be a u-sharp/l-shape). I was told I didn't mention I needed hooks, how was I supposed to know about the hooks, why wasn't I advised?

I paid R12499 for these couches and expected to get good quality. Looks like I spent R3000 for them.

I have asked that they collect these couches as I should have a return policy if not happy with my purchase. Either they fix what I don't like, or I go to their store and pick couches worth the price I paid for. They are telling me to give it 2/3 weeks and they should be fine. Imagine this.

I am not in any position to give it 2/3 more weeks, I don't like the work on those couches (the stitch) looks so unprofessional and as a customer, they must do something.

The couches are hard as a rock. The colour looks more yellowish than the beige I chose. The comfort of these are terrible. The extra back rest that they mentioned is not there. When sitting on them, the backrest is so painful hard too. You can get backaches from them.