Bad products and service

CellC at Westgate has the worse service, got 2 phones from them within 6 day's, both phones had the same problem, they refuse to give my money back, said they need to book it in and seems they want to give me this faulty phone back, after having it for 4 days only, this is the service you get when you buy a phone cash, and there's no manager or area manager available to clients as per staff in store, so managers just don't care about clients, it's like you don't like it so what we don't need your business, people should not support CellC Westgate