Ekart and Flipkart - Providing improper delivery information

I ordered a laptop from flipkart on **th july ****, then after on **th july **** I received a message that your order will be going to deliver today by * p.m. so waited for that at home and even after *:** p.m. my order was not deliver so I call the delivery agent provide by flipkart so first he said that yes I coming in half and hour so I waited more and then even after waiting for an hour I didn't receive my order then I call back to agent so he was not picking up call and after few minutes I received a message due to logistics issue your order will be deliver by tomorrow, it's really a bad pratice use by flipkart and ekart that they care hope of delivery in our mind and cancel it even after waiting for it personally I wasted my time for that and it's really mental disturbance for sure