Poor Service by Defy Appliances

I have bought a PC Defy Stove at Hirsch Centurion and after installation, the stove started to show the F when it's been put on I reported the stove where I bought it and was reported to Defy and service was logged. with customer number ***. On the 20 January 2022 Technician Number 78460 came and said the PC Board was locked and he unlocked it before he leaves the door the problem started again and he told me that he is going to Midrand the following day which is the 23 January and he will come with a New PC and he hasn't reported back to me after few days i phoned back to ask him when will I get the PC and he told me that they are out of stock. This is a very frustrating situation and customer care is not done by updating how far they are with the PC Board I'm having a brand new Stovbe that cost me a lot of money and currently not working and I'm using cash to buy gas for my family which is really straining