Flipkart — I have been Cheated by Flipkart/Seller

I have ordered AMD Ryzen 5 5600g processor in Flipkart dated 24th March 2022.The Order ID is OD[protected]. It is Flipkart Exclusive product. The box is Original but the processor inside the box is AMD Athalon processor which is a dual core processor.
tHE COST OF THE PRODUCT IS Rs.21, 899/- and they have gave me a 4-5000 rs product.
I have contacted flipkart customer care multiple times from a week now and i didnt get a resolution.
Its been a mental torture for me to raise complaint in the flipkart and then they close the issue without proper solution. Kindly help me out.