Flipkart — Indefinite delivery delay of & lack of information regarding order.

My order of Duroflex mattress from Flipkart (placed on 10 October) was delivered with a manufacturing defect. So I requested for a replacement & returned it on 29 October. Now the replacement order (which was shipped on 1 November) has been damaged in transit by their courier partner Ekart Logistics is still with them at the final delivery station. Flipkart customer support still has no idea why my order hasn't been delivered yet which was supposed to happen by November 12 & they keep wasting my time by giving me flase deadlines. They've wasted an entire week of mine in this manner. Their customer support representative Manali Jain keeps calling me on my phone number only to tell me that she's apparently still looking into the issue with no legit answers & doesn't give me any information about my order upon my request. I've asked her & several other customer care representatives multiple times to tell me the current location of the order & when it'll be delivered to me these past 7 days. But everytime I'm told that they currently don't have that information due to technical errors & to wait until whatever false deadline I was recently provided with. I came to know that the order was damaged by them in transit & it's current location by tracking it on www.flipkart.com/rv/trackorder. I purchased this product with a 45% discount during their Big Billion Days sale & which saved me around ₹2500. I just want an undamaged replacement product delivered to me as soon as possible as the initial 45% discount is no longer available. Please help.