Flipkart — Delay in delivery of Laptop for no reason

I ordered a Lenovo laptop on 21st October. On 22nd October at 8:55 am, the order arrived at a Flipkart facility near me in Sector V, Kolkata. Then on next day (23rd), it shows that it has left the Kolkata facility on 6:40 am and then on 24th, it again shows that it arrived at Kolkata facility. I tried contacting the customer care but they just didn't seem to address my issue and kept telling me to wait.
Now today (24th evening), they prompt that the shipment is delayed till 31st, even when the shipment is near my location already for 2 days now. They haven't even shared the contact of the delivery agent or the hub. I don't know why they're harrassing the customer this way.