Unacceptable after care service from SAMSUNG

Terrible experience with Samsung following the purchase of a new 55" Q70T Smart TV (for R20,000). From the beginning it was temperamental with applications such as Netflix, Prime and Apple TV. 3 weeks ago it stopped working completely and that is where my problems began. A Samsung technician examined it and said it was a factory fault that could not be repaired. He promised me a replacement but since then Samsung have been appalling. They fail to return calls or emails. Totally unacceptable and I will now be demanding a refund under the CPA. SAMSUNG you are a disgrace. Your Q70 TV is not fit for purpose and has an internal latent defect. Buyers Beware