They sell faulty Devices and claim they are out of warranty

I've been a loyal customer for good 4 years. I've made 6 purchases from them. I first purchased an iphone 7 Plus. In 4 Months of using it just died. I had to sell it for parts. I then purchased an HP Laptop which also months later just died and didn't switch on. I then notified them they took it in and realized they sold me a faulty one and opted to replace it with another one. The battery had died, they knew it was dead whilst the previous one they took was functional without being used on charger. They pretended to not being aware that the battery was dead and kept insisting I should charge it. They then sent me R250 to purchase a charger lol. Stupid me I know.i then bought a Samsung A04 and Iphone 7 which were completely okay. Recently I bought another laptop and an iphone 7. Telle why the laptop just died again. I am aware the battery died and bought it as it is but why 8 months later it does. Tried calling for good two weeks. I was met with excuses that they are on lunch, it's out of warranty. I sent an email, Tanya responded, tryna give me the idea I'll be assisted but eventually she stopped responding to my emails. The iphone 7 screen has been acting up since I purchased the phone. NOTE: with my previous purchase, I wrote a review and they made me delete it. I guess they want potential customers have the idea that they sell very quality devices whilst it's the opposite. So BUY AT YOUR OWN RISK. They disposing electronic devices that are faulty buy selling to us. Very Disappointed with them as I'd refer my clients(from my small business ) to purchase from them.