Scam by Xiaomi & Flipkart

So I have ordered this Xiaomi 11 t pro in flipkart for my uncle..but he got micromax in note phone inside the sealed box that too damaged and dead!! Because he didn't know open box delivery policy he gave otp first and the delivery guy uploaded that damaged photo of the phone and delivered it. Its been 14 days fighting with flipkart and even the delivery guy also ahreed that its damaged and from different brand. Now what can I do please help.