Amazon India — package was not delivered

I order a product on 19th january 2019 and after few days it showed that the product is delivered but i didnt receive any product and i didnt even receive a call from the delivery man i spoke to the customer care they told me that the will place a replacement order they did that and again on it showed that the product is delivered but still i didnt receive the product again i spoke to the customer care executive they told me that i have to wait till 12 feb 2019 i did that and i dont know why but they blocked my amazon account and they denied refund request