Croma — Non Delivery of Product without any reason

I had ordered an Iphone 13 mini from Croma on 25th September. The sole reason for placing the order with croma was it showed that the delivery will be done BY 26th September(not expected by). As usual they failed to do so. On talking with customer care they were clue less and couldnt give me any reason why it was not delivered on time. Standard reply I got was "We have noted your complaint and expect a call back in 24hrs". On asking the exact reason they said "We cant tell you as the warehouse is closed as it is Sunday!!!" What would consumer do of a call back? will CROMA give it for free because they botched it up? 24 hrs later I am yet to hear from them. As much as I hate to say it, CROMA being a TATA product but please dont order from them at any cost.

Today is 27th and they are still showing delivery by 26th September in track order page. Screenshot attached.

Their webpage is still showing that if I order the product today they will deliver on the next day in order to reel in more customers.