Makro useless and still unable to resolve return after 4 weeks

I purchased a Defy dishwasher from Makro, after 2 days it started leaking water from the bottom. I logged a return/refund query and after struggling for 3 weeks Makro responded to say they must get Defy to send a technician to inspect first. The technician finally arrives says yes there is a problem then Defy wants to fix the part and I say "hell no" I paid for a new one and they need to exchange it. Days pass and after phoning and phoning Makro says Defy promised to deliver the new one today 16 Aug 2023. Needless to say they never came, never phoned, nothing. Useless. It Defies all logic. 4 weeks and still Makro hasn't resolved the issue. Lesedi from the call centre promised on Monday it will definitely be sorted out by today and and and ... Enough, Defy must stay away from my premises - Makro come and pick up this ******* you sold me and refund my money. I'll shop at a place that delivers a service.