Amazon India — delivery of wrong product ordered vivo v15 and they deliver vivo y12

I ordered "vivo v15 (Aqua blue, 6gb ram, 64gb storage) with no cost emi/additional exchange offers" from amazon.in with mobile application on 15th july 09:09 pm and my order id is[protected] paid total amount 13310.90 by my hdfc credit card *-9847 after all discount and in exchange of my iphone 5s. But i received vivo y12 on 17th of july which cost only approx 12000 inr. I register my complaint to amazon customer care they said send me all photos and videos and wait 4-5 days i send all the product photos and unboxing videos too but after 5 days when i call them they said they deliver right product they cant help me out. Please help me out in this case and resolve the issue as i become a victim of giant amazon fraudulent.
Thanks