Defective item delivered with no resolution from customer care

I placed an online order on 26 July 2021. And the whole process has been disappointing. I received partial delivery of my order as the courier had damaged one of the items during transit. It took the customer service team more than a week of communication and they still could not resolved this. Eventually I had to phone into the store responsible for delivery and speak to the manager to resolve the issue. The item (Lowest price toilet close couple white ceramic: SKU: ***2) was delivered and installed by our plumbers. We had subsequently picked up an issue and reported it to the customer service team on 8 September 2021. Danielle Kruger had been assigned to assist but to date I still have not been assisted with this issue. I sent through photos and videos of the issue with the toilet. I was advised that it is a faulty flushing mechanism and that I must come through to the store and pick a new flushing mechanism and fix myself!! I communicated that this is not acceptable as I paid for delivery of the item and they cannot expect a customer to come through and pick up the spare part and fix ourselves. I requested that they send a someone out with the part and repair the defective item. To date I have not been contacted on a way forward here. Absolutely pathetic service!