New 75" skyworth faulty no service or replacement

Brand new skyworth 75" UHD IS FAULTY FROM BEGINNING with faulty led black spots on screen, I called supplier no help must work with skyworth, calls skyworth customer support followed procedures for online fault report even submitted the complaint more than once as no one even responds to the online ticket or any responce this is by far the worst brand in SA to buy Samsung or hisense or anything would have replaced my unit immediately in store as it was faulty from the beginning now 2 weeks later skyworth just doesn't care yet they advertise everywhere about the so called good brand and services....