Worst customers service provider

worst e-commerce company. ordered laptop from flipkart, they accecpted the order, but just the day before delivery, they cancelled my order stating that seller does not have stock, but i can see on the flipkart app that the same seller was selling the same laptop which i ordered. when you call customer care, they will show that how helpless they are and they will just say sorry all the time.
they don’t even know about their sellers.
worst customer experience.