Faulty device, Poor delivery service, Poor customer service, No resolution, No accountability

My wife bought a 75" Samsung Qled TV on Black Friday weekend (Sun, 01 Dec) from Makro @ Carnival Mall. Delivery was done at 16h40 on 04 Dec. The delivery crew decided to offload the TV and place the box in a pool of water at the estate gate. Setup TV 10am on 05 Dec to find that it displays only a blank canvas - screen defective - manufacturing fault? Logged a call with Makro call center at 10h30 (ref 424271). Told by agent to return TV to branch within 14 days. I explained that it does not fit in my car, hence delivery done and hence this call. Asked that they fetch, swop out and return. Agent told me to phone the branch myself to arrange for collection. I have attempted multiple calls. The branch call attendant answers and keeps on hold for 10mins. Cannot get through to anyone. I live 20km from the branch. Phone call center again who promised Richard (agent) would get the branch in contact with me. Still nothing 4 hours later... Your call center is powerless if your branches simply do not care about customer service. Poor experience! Please arrange for swop out of my faulty device immediately.