Poor customer service and poor product quality.

30/04/2022, I bought a Defy stove with a glass top (hob) at Game in Alberton city. 8 months after purchase, the glass top (hob) cracked from side to side without any reason. Problem was reported at Game, after which a Defy technician came to visit me to investigate the problem. His finding was that the glass top (hob) cracked by itself , nothing else was the cause of the crack, in other words a factory error. According to Defy and Game, the glass is not covered by the warranty, whereby Defy expects me to pay for the repair costs after I already paid R6799 when buying the stove. Not Defy or Game wants to take the onus on them. Defy keep on saying that the glass top (hob) is not covered by the warranty. There is currently a 3 year warranty on the product game. What now??????