Appario Retail Private Ltd - Package not delivered

I had ordered for a lenovo tab on June * from amazon. It was supposed to be delivered to me on June *. Since I had multiple orders on that day, appario retail private Ltd, amazon and the delivery agency cheated me. The delivery agent came with * parcels. I had * health mix powder to be delivered to me on that day along with one tab. The delivery agent came with one cardboard box and another bubble wrapped package and asked me for the OTP. The package looked similar to a tab and amazon does not reveal anything on the package about the insides, so I disclosed the OTP and got my order. I opened the package and found health mix powder inside the cardboard box and another health mix powder bubble wrapped. I raised a complaint with amazon customer care. Since amazon is a huge company who keeps track of their customers, they would definitely be having the backup of all the chat I had with the customer service. The customer service chat person asked me to wait until June *. I waited until June * and raised an issue again with amazon, they said they are raising an investigation against this issue. * person from delivery agency came home and asked me for the details, I provided them. But unfortunately I did not have the cardboard box in which the order I'd was mentioned. So they closed the case saying that the order has been delivered. And now amazon cannot do any further help on this as they are only an intermediate and not a seller or a manufacturer itseems. As a customer of amazon I ordered an item trusting it. Now I would like to raise a complaint against appario retail private Ltd and amazon for bluffing me with a bubble wrapped health mix powder.