Big Bazaar / Futurebazaar / Future Retail / Hometown — Online home delivery not delivered

I made an order of amount 1844.40 to be delivered on 8th May 12:00pm -04:00pm slot.
I did not receive the order yet. On the app it's shown that the order is in transit. Also some item is shown as cancelled and the amount is now shown as 1782.40. I haven't received any refund.

I tried calling the customer care but no one picked up and when I tried the store number (Big Bazaar, Nucleus mall, Maradu) it said the number does not exist. This is so irresponsible and unprofessional. I want Big Bazaar to either get my order delivered or refund the whole amount (Rs 1844.40) ASAP