Flipkart — Sound bar received with faulty battery : order id : OD[protected]

Address:

India

Respected sir,
My nephew, sk sanouir, ordered a boat sound bar ( order id : OD[protected] on 23rd February, 2022. But he received a faulty battery- sound bar. The battery did not perform well and dropped from 70 percent to 20 percent within minute. When contacted the Flipkart customer care they denied to replace the item
Hence, my nephew wants your ace helping hands to get rid of this problem. His mobile number is : [protected]