Flipkart — Refused to deliver product after coming to the doorstep

Worst online product delivery experience I've ever faced. I bought a redmi phone with exchange. The delivery person brought the phone to the doorstep and did his quality checks but refused to deliver as he could not connect to HIS SERVER and hence would not exchange and deliver the product to us. The mobile was a surprise birthday gift and the delivery person wasted about an hr of ours and that too on the birthday. There was absolutely no communication hence from flipkart. We contacted almost 5 times with their support excecutive but got different response from them including that we canceled the order and another one saying we refused to accept the order and yet another one saying the mobile will be delivered by 7pm, 9pm etc and finally next day. Today is already 3 day of such fake promises from flipkart. Very poor attitude. Never waste time, money and effort with flipkart anymore.