Flipkart — Flipkart_My product not delivered but status showing delivered

I have ordered luminous Zelio 1100+RC 18000 tall tubular battery (Order ID: OD[protected] in flipkart on 08/10/2021
seller is STTRDERSKTL. Estimated delivery date was 25/10/2021. There is no tracking shows till 25th Oct.
After 25th shows that the order was delivered on 16/10/2021 11:59 PM(Mid-night) and there is no invoice bill also.
And same i complaint to flipkart customer care (Complaint ID: IN[protected]) on same day(25th).
After that called customer care many times, but no solution till now(6th Nov).

Please investigate about this issue and help to send my product as soon as possible.